Can you replace the question mark with the correct number?

Which wheel of car does not rotate when you turn your car right?

I am a number I am not an odd number I am higher than 90 I am not higher than 100 If you subtract me from 100, you get nothing. What number am I?

Three people are in a room. Ronni looks at the Nile. The Nile looks at Senthil. Ronni is married but Senthil is not married. At any point, is a married person looking at an unmarried person? Yes, No or Cannot be determined.

In the image given, you can find several triangles. Can you count them all?

Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?

Can you Find and name the hidden bird in the picture below ?

Which is faster, Heat or Cold ? Explain.

Replace the (?) with the correct mathematical signs to make the expression equal to 59.

18 ? 12 ? 4 ? 5 = 59

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?