<PRE><B>Question 1176631</B>


Which number is missing from this sequence?
75 15 ? 5 15 3 13

observe {{{5}}} {{{15}}} {{{3}}} {{{13}}}, what is a pathern
{{{5+10=15}}}
{{{15/5=3}}}............so, first divide by{{{ 5}}}
{{{3+10=13}}}.........then add {{{10}}}

then   before 5 must be a number which divided by 5 gives us 5, and that is 25

Divide the first number by {{{5}}} to get the second number.

{{{75/5= 15}}}

Add {{{10}}} to the second number to get the third number.

{{{15 + 10 = 25}}}

Divide the third number by {{{5}}} to get the fourth number

{{{25/5=5}}}

Add {{{10}}} to the fourth  number to get the fifth  number

{{{5+10=15}}}

Divide the fifth  number by {{{5}}} to get the sixt number

{{{15/5=3}}}

Add {{{10}}} to the sixt number to get the seventh number

{{{3+10 =13}}}

answer:  missing number from this sequence is {{{highlight(25)}}}

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