Question

44
Single Answer Type
19, 24, 31, 42, 55, 72, _?_

Answer 1

Answer:

91

Step-by-step explanation:

The giving numbers are 19, 24, 31, 42, 55, 72

Now,

24 - 19 = 5

31 - 24 = 7

42 - 31 = 11

55 - 42 = 13

72 - 55 = 17

So, the numbers 5,7,11, 13,17 all are prime numbers.

Hence, the missing value is 72 + 19 = 91