Bank PO Questions

The given number series is 14, 27, 105, 525, 4993

14

14 x 2 - 1 = 27

27 x 4 - 3 = 105

105 x 6 - 5 = 625 (not 525)

625 x 8 - 7 = 4993

Hence, the odd man or number in the given number series is 525.

Binary system is what the representation uses only two digits 0 & 1.

It uses only the powers of 2.

Optical illusion is what that refers to persistence of vision with a principle that multiple images blend into a single image in human mind and what is showed in cinema.

Hence, Persistence of vision is the principle behind cinema.

Pathogenic bacteria cause the greatest harm in the food industry.

The main causes for the boat accidents are ::

1. Excessive speed

2. Machinery failure

3. Operator inexperience

4. Alcohol use

5. Operator inattention

6. Lack of proper look-out

7. Careless/reckless behavior and hull failure

8. Hazardous waters

and some more...

Here in the given number puzzle, the logic is

column 2 x column 3 = column 1

3 x 3 = 9

2 x 3 = 6

Similarly,

4 x ? = 8

=> ? = 8/4 = 2.