Can you find the odd number in the following?

2716, 4135, 5321 and 7145

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

What does this mathematical rebus means ?

I am under you when I am whole.
I shift above you if you remove the first letter.
I come all around you if you remove the second as well.

Can you tell me who I am?

Akbar summoned Birbal out of anger.
He told him that he will have to face death.
He asked him to make a statement and if the statement is true he will be buried alive and if the statement is false, he will be thrown at lions.
After hearing Birbal’s statement, Akbar could do nothing but smile.
He gave him 5 gold bars and let him go.

What did Birbal say?

Find the number of squares in the below picture

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

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

The cream is heavier than Milk. True or False?

What has hands, but can’t clap?