If Bihan is 10, Anirudha is 20, and Kim and Seal are both 5, but Rikold is 10, how much is Kenniger by the same trend?

I have Rs.50 and I spend it in the way as below.

What is the longest word in the dictionary?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

Next Number in the Series,

5, 16, 49, 104, ?

If a zookeeper had 100 pairs of animals in her zoo, and two pairs of babies are born for each one of the original animals, then (sadly) 23 animals don’t survive, how many animals do you have left in total?

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?

Can you count the number of seconds in a year?

Clue: You need to bother about calculation.

There is an English word that can be used up to four times in a row without modifying the spelling and form a valid grammatical sentence.

Do you know what word is that?

Prove that the below maths equation is true.

8 + 8 = 91