How many times in a given day, minutes and hour clock comes in a straight line ?

Replace the question mark with the correct number.

2 + 2= 4
3 + 3= 18
4 + 4= 48
5 + 5= ?

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

I am Huge on Sunday and Saturday.
I am small from Tuesday to Thursday.
I do not exist on Monday and Friday.
Who am I?

John is 45 years older than his son Jacob. If you find similarities between their ages, both of their ages contain prime numbers as the digits. Also, John's age is the reverse of Jacob's age.

Can you find their ages?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

In a football game, Christina defeated Teresa by 2 - 0 but no man from either side scored. How can this be possible?

On one occasion, A Boy collects 71 rupees in form of 20 paise and 25 paise. He collects a total of 324 coins.

Can you tell me how many 20-paisa and 25-paisa he got?

With pointed fangs I sit and wait; with piercing force I crunch out fate; grabbing victims, proclaiming might; physically joining with a single bite. What am I?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.