Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

13 decks of cards have been mixed. What is the minimum number of cards that must be taken out from the above-mixed cards to guarantee at least one 'four of a kind?

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?

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

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?

10+10 and 11+11 can give you the same answer.

Explain how?

Can you count the number of lines in the below picture?

If EELS + MARK + BEST + WARY = EASY

What does HELP + BARK + WARD + LEAD equal?

What is red and smells like blue paint?