Can you find out the total number of triangles in the given figure?

Find the value of "a" by solving the maths equation in the picture below:

John was piloting a plane behind a car but was never able to overtake it. Why?

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

I have 50 feet long of cloth, I need to create 50 handkerchiefs each size of 1 foot. I take one minute to cut a 1-foot handkerchief. So how long will it take to cut 50 handkerchiefs?

You Are Highly Attentive If You Can Spot A Hat In This Bathroom In 9 Seconds!

All of Jacob's shoes are red except two.
All of Jacob's shoes are green except two.
All of Jacob's shoes are yellow except two.

How many shoes does Jacob have?

Which is the smallest number that you can write using all the vowels exactly once?

You are playing a game with your friend Jack. There are digits from 1 to 9. You both will take turn erasing one digit and adding it to your score. The first one to score 15 points will win the game.

Would you want to play first or second?

PS: The sum should be exactly 15.

How many runs at maximum can a batsman score in a normal one-day match? Consider the fact that the conditions are ideal and there are no No Balls, no Wide Balls and no Extras in that match.