What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

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 ?

Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

Can you spot the hidden girl in the picture below?

In the Mexico City area, there are two Houses H1 and H2. Both H1 and H2 have two children each.
In House H1, The boy plays for Mexico Youth academy and the other child plays baseball.
In House H2, The boy Plays soccer for his school in Mexico and they recently have a newborn.

Can you prove that the probability of House-H1 having a girl child is more than that of House-H2?

what one word does the below rebus identifies?

By what process could you make a 'Tea-Table' into food?

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

In a chess board, the queen piece can move horizontally, vertically and diagonally freely. The picture represents the same.Can you place 8 queens on the board in a manner that none of the queens can attack each other?

Three fair coins are tossed in the air and they land with heads up. Can you calculate the chances that when they are tossed again, two coins will again land with heads up?