Christina is older than Kareena and Karishma. Katrina is older than Karishma and younger than Kareena. If Kareena has a brother named John, who is older than Christina, who's the youngest?

There are hundred red gems and hundred blue gems. The blue gems are priceless while the red gems equal wastage. You have two sacks one labeled Heads and the other Tails. You have to distribute the gems as you want in the two sacks. Then a coin will be flipped and you will be asked to pick up a gem randomly from the corresponding sacks.

How will you distribute the gems between the sacks so that the odds of picking a Blue gem are maximum?

Can you decipher the below rebus?

PBLUESAISNUERSES

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

A thief enters a store and threatens the clerk, forcing her to open the safe. The clerk says, “The code for the safe is different every day, and if you hurt me you’ll never get the code.” But the thief manages to guess the code on his own. How did he do it?

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

I am thinking of a five-digit number such that:
The first and last digits are the same, their submission is an even number and multiplication is an odd number and is equal to the fourth number. Subtract five from it and we obtain the second number. Then divide into exact halves and we get the 3rd number.

What number I am thinking of?

Can you solve the below algebraic mathematical equation?

(J+O+I+N+T)3 = JOINT

In a stable, there are men and horses. In all, there are 22 heads and 72 feet. How many men and how many horses are in the stable