A beggar on the street can make one cigarette out of every 6 cigarette butts he finds. After one whole day of searching and checking public ashtrays the beggar finds a total of 72 cigarette butts. How many cigarettes can he make and smoke from the butts he found?

Christina, Allison and Lena are 3 daughters of John a well-known Mathematician, When I asked John the age of their daughters. He replied "The current age of her daughters is prime. Also, the difference between their ages is also prime."

How old are the daughters?

I hide my treasure in the ground, my tail is big and fluffy. If you spot me in a tree, please don’t call me scruffy. What am I?

What does the below rebus riddle means?

Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

What 5-letter word typed in all capital letters can be read the same upside down?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

Speaking of rivers, a man calls his dog from the opposite side of the river. The dog crosses the river without getting wet, and without using a bridge or boat. How?

What is the next number in the series?

15 29 56 108 208 ?