What should come in place of the question mark 39 39 in the following number series 100000 20000 400...........

Logical Reasoning (RBI) Number series

What should come in place of the question mark '?' in the following number series? 100000, 20000, 4000, 800, 160, ?

This questions was previously asked in

RBI Grade B (9 November 2019)

Let's break down the number series and each option:

- 100000, 20000, 4000, 800, 160, ?

- The series decreases by dividing by 5:

- 100000 ÷ 5 = 20000

- 20000 ÷ 5 = 4000

- 4000 ÷ 5 = 800

- 800 ÷ 5 = 160

- To find the missing number: 160 ÷ 5 = 32

Now, let's look at the options:

- Option 1: 25

- Incorrect: Does not follow the value derived from the series.

- Option 2: 80

- Incorrect: Larger than the correct division result.

- Option 3: 65

- Incorrect: Not matching with the division pattern.

- Option 4: 32

- Correct: Follows the pattern of dividing by 5.

- Option 5: 45

- Incorrect: Not consistent with the decreasing division sequence.

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