Question : Directions: Select the number from among the given options that can replace the question mark (?) in the following series.
45, 46, 50, 59, 75,?
Option 1: 95
Option 2: 100
Option 3: 105
Option 4: 90
Correct Answer: 100
Solution :
Given:
45, 46, 50, 59, 75,?
Add the square of the natural number in increasing order starting from 1 to get the required missing number –
45 + 1
2
= 46; 46 + 2
2
= 50; 50 + 3
2
= 59; 59 + 4
2
= 75; 75 + 5
2
= 100
So, the required missing number in the series is 100. Hence, the second option is correct.
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