I have teeth but i don't bite. Who Am I ?

Which Number is the odd one out?

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

How many triangles can you find in this given picture?

What does this mathematical rebus means ?

Suppose you are a girl candidate and sitting in an interview. Suddenly the interviewer asks you, 'What if one morning you wake up and find out that you are pregnant?

How will you reply to such a question?

Two-person want to cross a river. Only one boat is present on the riverside that can carry only one person at a time.

However, they still manage to cross the river. How is it possible?

I am a five-letter word and people eat me. If you remove the first letter I become an energy form. If you remove the first two letters, I am needed to live. Scramble the last three letters and I am a drink. What word am I?

Replace the question mark with the number below given a simple math problem.

There are forty elephants and they have forty-fore heads. How can this be possible?

Find the next number in the sequence

1, 2, 6, 21, 88, __?