Which Number is the odd one out?

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

You can hear me, but you can't touch or see me.

What am I?

It has horns but can’t beep. It is like to bleat but It is not a sheep. What is it?

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?

In the following series, a set of numbers is progressing with a particular pattern. Can you deduce that pattern and find the missing set?

(2 + 6), (21 + 6), (58 + 6), (119 + 6), ___

Two old friends, Jack and Jill, meet after a long time, and discussing as:

Jack: Hey, how are you, man?

Bill: Not bad, got married and I have three kids now.

Jack: That's awesome. How old are they?

Bill: The product of their ages is 72 and the sum of their ages is the same as your birth date.

Jack: Cool..But I still don't know.

Bill: My eldest kid just started taking piano lessons.

Jack: Oh, now I get it.

How old are Bill's kids?

What has 13 hearts but no other organs?

Replace the question mark with the correct number below.

Can you complete the sequence?

192, 021, 222, 324, 252, 627, 2__, 9__?

Which is faster, Heat or Cold ? Explain.