Find out the missing number in the picture attached:

Pronounced as 1 letter, And written with 3, 2 letters there are, and 2 only in me. I’m double, I’m single, I’m black blue and grey, I’m read from both ends, and the same either way. What am I?

Find The Missing Number In the Sequence.
6 25 64 ? 32 1

We have four gears with below features=> Both Gear A and D has 60 teeth=> Gear B has 40 teeth=> Gear C has 20 teeth=> Every two minutes, Gear B makes 25 full turns.What is the relative speed of Gear A and Gear B?

Three people are in a room. Ronni looks at the Nile. The Nile looks at Senthil. Ronni is married but Senthil is not married. At any point, is a married person looking at an unmarried person? Yes, No or Cannot be determined.

Find out the number of circles in the given picture having Illusion

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

What comes
Once in a Year
Twice in a Month
4 times in a Week
6 times in a Day

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

Can you spot what's wrong with the following sentence?

PETER WAS ANGRY AT
HIMSELF BECAUSE HE
ACCIDENTALLY LEFT THE
THE KEYS TO HIS CAR
AT HIS FRIEND'S HOUSE.