I have branches, but no fruit, trunk or leaves. What am I?

Prove that the below maths equation is true.

8 + 8 = 91

John is looking at Jenifer, but Jenifer is looking at Jacob. John is married, but Jacob is not.

Is a married person looking at an unmarried person ?

It's a test that will check your IQ.

Suppose you have one 11 minute hourglass and one 13 minute hourglass.

Can you measure exactly fifteen minutes using them ?

Solve the alphametic puzzle by replacing the alphabet with the number.

S T O R M +
S O L E S
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T O W E L
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A person is found murdered in his Chamber. When the crime scene is investigated, the Investigator find out that there is a calendar on which the victim has written a few numbers with his blood. The numbers are 4, 11, 11 and 4.

There are four suspects in the murder, John, Jacob, Anna and Lee. Can you find out who is the murderer?

Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

What is the next shape from answers A, B, C, and D figure?

What's the only room from which no one can enter or leave

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?