Similar Kids Riddles

Find the missing number in the series below

13 -21 34 -55 ? -144

How many triangles do you see in the picture puzzle below?

You need to remove four matchsticks from the picture below and still need to maintain the following as in the original image.
1. 1st row contains 12 matchsticks
2. 2nd row contains 12 matchsticks
3. 1st column contains 12 matchsticks
4. 2nd column contains 12 matchsticks

Which of the eight images will fill the missing image in the puzzle below?

Can you find the next number in the sequence?

113 119 101 114 116 ?

Find the value of "a" by solving the maths equation in the picture below:

Before Balboa discovered the Pacific Ocean, which was the largest ocean before that?

In a university, a professor gave a set of three problems to the three brilliant students of his class. See the image for the questions.

I have a sore throat and a severe headache. I have four tablets with me that are identical to each other and they do not have any cover on them. There is no way I can identify which tablet serves what purpose. The only thing that I know is that two of these four tablets are for the throat and the remaining two are for the headache. To treat my condition, I must take 1 of each. What will I do now?