Questions on Algebra: Sequences of numbers, series and how to sum them answered by real tutors!

Tutors Answer Your Questions about Sequences-and-series (FREE)

Question 1203828: What kind of sequence is this?
634, 634, 634, 634, ...

Click here to see answer by ikleyn(52787)

Question 1203845: 20, 32, 47, 57, ?, 80
Find the missing number of the given series
Click here to see answer by josgarithmetic(39617)

Question 1203845: 20, 32, 47, 57, ?, 80
Find the missing number of the given series
Click here to see answer by greenestamps(13200)

Question 1203845: 20, 32, 47, 57, ?, 80
Find the missing number of the given series
Click here to see answer by math_tutor2020(3817)

Question 1203845: 20, 32, 47, 57, ?, 80
Find the missing number of the given series
Click here to see answer by ikleyn(52787)

Question 1203990: 23846, ?, 12, 2
Click here to see answer by mananth(16946)

Question 1203990: 23846, ?, 12, 2
Click here to see answer by ikleyn(52787)

Question 1204026: The windows of a downtown office building are arranged so that each floor has six fewer windows than the floor below it. If the ground floor has 52 windows, how many total windows are on the first eight floors
Click here to see answer by ikleyn(52787)

Question 1204114: The first and the last term of an arithmetic progression are -0.5 and 140.5 respectively. If the number of terms in the sequence is 48, find it's common difference
Click here to see answer by math_tutor2020(3817)

Question 1204267: if the 6th term of an A.P is 35 and the 13th term is 27, calcuate the 20th term
Click here to see answer by greenestamps(13200)

Question 1204296: Find the sum of the digit of a 3 digit integers

Click here to see answer by mananth(16946)

Question 1204296: Find the sum of the digit of a 3 digit integers

Click here to see answer by ikleyn(52787)

Question 1204298: What is the 10th term of the geometric sequence -3, 15, -75...?
Click here to see answer by mananth(16946)

Question 1204307: A gp has 8 terms it's first and last terms are 0.3 and 83.4 calculate the common ratio
Click here to see answer by josgarithmetic(39617)

Question 1204307: A gp has 8 terms it's first and last terms are 0.3 and 83.4 calculate the common ratio
Click here to see answer by MathLover1(20850)

Question 1204310: In how many ways can the number 105 be written as the sum of two or more consecutive positive integers?

Click here to see answer by MathLover1(20850)

Question 1204310: In how many ways can the number 105 be written as the sum of two or more consecutive positive integers?

Click here to see answer by ikleyn(52787)

Question 1204360: A bacteria culture initially has 5000, and its size increased by 8% every minute. About how many bacteria are present in the culture after 4 mins.
My answer is initially 6802.44 but this amount of bacteria should only be after around 4 hours and not minutes.
Click here to see answer by math_tutor2020(3817)

Question 1204373: The sum of the first two terms of an G.P is x and the sum of the last two term is y, if there are n terms in the progression, find the common difference
Click here to see answer by ikleyn(52787)

Question 1204372: If the second and fifth terms of an G.P are 6 and 48 respectively, find the 10th term of the G.P
Click here to see answer by Edwin McCravy(20056)

Question 1204372: If the second and fifth terms of an G.P are 6 and 48 respectively, find the 10th term of the G.P
Click here to see answer by mananth(16946)

Question 1204372: If the second and fifth terms of an G.P are 6 and 48 respectively, find the 10th term of the G.P
Click here to see answer by MathLover1(20850)

Question 1204429: A man saved 16500 in ten year. In each year after the first, he saved 100 more than he did in the preceding year. How much did he save in the first year?
Click here to see answer by mananth(16946)

Question 1204431: Determine whether 280 is a term in the G.P 1,3,9,27…
Click here to see answer by josgarithmetic(39617)

Question 1204431: Determine whether 280 is a term in the G.P 1,3,9,27…
Click here to see answer by math_tutor2020(3817)

Question 1204431: Determine whether 280 is a term in the G.P 1,3,9,27…
Click here to see answer by mananth(16946)

Question 1204435: Given that the 2rd term of a G.p is 180 and the 3rd term is 360, calculate:
a) the first term
b) the common ratio
c) the sum of the first four terms
Click here to see answer by josgarithmetic(39617)

Question 1204430: A man borrows 1,000 and agrees to repay with 10 instalments, each instalment being less than the preceding instalment by 8. Find the his first instalment
Click here to see answer by mananth(16946)

Question 1204442: Find the number of terms in an A.P, whose first term is 1, last term is 77 and the sum of terms is 507
Click here to see answer by math_tutor2020(3817)

Question 1204428: A man borrows 2,00 and agrees to repay with a total interest of 340 in 12 monthly instalment, each instalment being less than the preceding instalment by 10, What should be his first instalment?
Click here to see answer by ikleyn(52787)

Question 1204427: A man borrows 1,000 and agrees to repay with 10 instalments, each instalment being less than the preceding instalment by 8. Find the his first instalment
Click here to see answer by ikleyn(52787)

Question 1204480: If 4/3 ,M, 1, N is form GP, what is the product of M and N
Click here to see answer by josgarithmetic(39617)

Question 1204480: If 4/3 ,M, 1, N is form GP, what is the product of M and N
Click here to see answer by greenestamps(13200)

Question 1204480: If 4/3 ,M, 1, N is form GP, what is the product of M and N
Click here to see answer by ikleyn(52787)

Question 1204758: Is the sequence geometric? If so, identify the common ratio.
6, 12, 24, 48, ...
Click here to see answer by math_tutor2020(3817)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035, 10036..10080, 10081..10125, 10126..10170, 10171..10215, 10216..10260, 10261..10305, 10306..10350, 10351..10395, 10396..10440, 10441..10485, 10486..10530, 10531..10575, 10576..10620, 10621..10665, 10666..10710, 10711..10755, 10756..10800, 10801..10845, 10846..10890, 10891..10935, 10936..10980, 10981..11025, 11026..11070, 11071..11115, 11116..11160, 11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790