Which Number is the odd one out?

A) 7145
B) 2716
C) 5321
D) 4135

Can you count the number of triangles in the given picture?

During an interview, the interviewer ordered hot coffee for the candidate to relieve the stress. The coffee was kept before him. After a minute, the interviewer asked him, 'What is before you?' He replied 'Tea'.

The candidate was selected immediately. Why?

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?

There are nine letters in the below-given diagram. You have to form a nine-letter word using these letters.

If you drop a 15 kg iron bar and a 5 kg bag of cotton from a height of 50 meters which will reach the ground first?

Two guards were on duty outside a barracks. One faced up the road to watch for anyone approaching from the North. The other looked down the road to see if anyone approached from the South. Suddenly one of them said to the other, "Why are you smiling?"

How did he know his companion was smiling?

The answer I give is yes, but what I mean is no. What was the question?

There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?

A man wants to cross the pit of fire which is 25 feet in length and he has 2 planks(fire resistant) 19 feet in length. How can he cross the pit of fire alive?