2, 3, 5, 9, 17, _ What is the next number in the sequence?

81 x 9 = 801. What must you do to make the this equation true?

In the picture given below, can you find out which digit will take place of the question mark?

Can you find out the total number of triangles in the given figure?

Given below is simple addition with a defined pattern pattern:
7 + 7 = 2
8 + 8 = 4
8 + 5 = 1
6 + 9 = 3
10 + 11 = 9

Can you analyze the pattern and find out the answer for:

4 + 9 = ?

Solve the counting riddle by identifying the number of triangles in the given picture.

Some friends went on a vacation to a resort. It was raining heavily and it kept raining for thirteen days.

When it rained in the morning, the afternoon was beautiful and when it rained in the afternoon, the day was blessed with a clear morning.

Overall, the friends experienced eleven nice mornings and twelve nice afternoons. Can you find out the number of days they spent on vacation?

Dwayne Johnson was running away with the loot from a heist in his car along with Vin Diesel. One tire was punctured and he dropped down to replace it. While changing the wheel, he dropped the four nuts that were holding the wheel and they fell into a drain. Vin Diesel gave him an idea using which they were able to drive till the rendezvous point.

What was the idea ?

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?