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

Below, you can see three complete equations and one incomplete. Based on the three complete ones, can you complete the incomplete one?

5 $ 4 $ 3 $ 9 = 4215
6 $ 9 $ 2 $ 6 = 3816
4 $ 7 $ 3 $ 3 = 1122
7 $ 2 $ 7 $ 4 = ____

Can you place six X (crosses) in below board without making three in a row in any way ?

Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?

Assume there are approximately 5,000,000,000 (5 billion) people on Earth. What would you estimate to be the result, if you multiply together the number of fingers on every person's left hand? (For the purposes of this exercise, thumbs count as fingers, for five fingers per hand.) If you cannot estimate the number then try to guess how long the number would be.

If,

Akriti = 631
Levis = 521
Sroti = 521
Aneel = 533
Then,
Sunil =?

John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?

O_er_t_o_

Complete the missing letters of the given word.

The current time can be represented by below textual rebus.

0
=========
B.Sc
LLB

Can you tell us the current time?

Which city is three-fifths chick two third cat and 50% goat?