If EELS + MARK + BEST + WARY = EASY

What does HELP + BARK + WARD + LEAD equal?

Pronounced as 1 letter, And written with 3, 2 letters there are, and 2 only in me. I’m double, I’m single, I’m black blue and grey, I’m read from both ends, and the same either way. What am I?

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

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

Check out the number list below and find what number comes next in the sequence.

111 , 113 , 117 , 119 , 123 , 137 , ?

John was drowned by he was not wet. How?

You are playing as white and given four rooks to checkmate the black king in four moves with the following rules 1. You can place one rook every move and ensure the black king should be in check position.2. After four moves the black king should be in the checkmate position.

A famous swimmer can swim downstream in a lake in exactly 40 minutes with the lake current.
He can swim upstream in that lake in exactly 60 minutes against the lake current.
The length of the lake is 2 km.

How long he can cover the distance of one side at a still lake with no current?

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

Analyze and find the missing item in the sequence:
16, 06, 68, 88, __, 98