Question

Find the missing terms of series given below 10,21,36,55,?,105,136

Answer 1

Answer:

78 is the answer

Explanation:

10+11=21+15=36+19=55 + 23 =78 ...........

in each sequence +11,+15,+19

there is a gap of 4 number

so

78 is the answer

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Answer 2

Missing number in series will be - 78.

The given series follow particular pattern for obtaining result. Pattens maybe one or multiple. One pattern to solve this is-

2*5= 10

3*7 = 21

First number is incremented by 1 and second number by 2. By following same method, other results too can be obtained.

4*9 = 36

5*11 = 55

6*13 = 78

7*15 = 105

8*17 = 136.

Hence, required number is 78 obtained by multiplying six with thirteen.