what will come in place of (?) in the following number series? 5,16,32,55,87,?
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Answer:
130
Step-by-step explanation:
the third difference is in AP clearly
5,16,32,55,87
first dif-- 11,16,23,32
second dif--5, 7,9
third dif--2,2
so third dif in AP
so we can use ax^3+bx^2+cx+d as nth term
and find the next number or
we can add 11 to the 32
so it will become 43 and 43 we have to add to 87
so our answer will be 130
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