Question 855462: How many odd numbers less than 50 are exactly divisible by 3?
Answer by chndnbl(31)   (Show Source):
You can put this solution on YOUR website! Firstly we have to find sequence,
3,9,15,21,............,45, this sequence is in AP.
a=3, d=6, Tn=45, n=?
Tn = a + (n-1)d
45 =3 + (n-1)6
45 =3 + 6n-6
45 =6n - 3
45 + 3 =6n
48 = 6n
n =48/6
n = 8.
8 odd numbers less than 50 divisible by 3
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