Question 27
Which number will replace the question mark (?) in the following number series?
5, 4, 6, 15, 56, ?
Solution
Given Series : 5, 4, 6, 15, 56, ?
The pattern followed here is :
- $$5\times\ 1\ -\ 1=4$$
- $$4\times\ 2\ -\ 2=6$$
- $$6\times\ 3\ -\ 3=15$$
- $$15\times\ 4\ -\ 4=56$$
- $$56\times\ 5\ -\ 5=275$$
So, 275 is the term which will replace the ?
Hence, Option C is correct.
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