What is the next number?

77, 49, 36, 18 ?

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

The husband and wife were jogging in the morning. To match every two steps of the husband, the wife required three steps. If Both of them start with the here right foot. After how many steps do their left foot be together?

You Are Highly Attentive If You Can Spot A Hat In This Bathroom In 9 Seconds!

Which digit occurred maximum times between the number 1 and 1000?

Next Number in the Series,

5, 16, 49, 104, ?

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

Readers with the sharpest vision can find the eagle in the mountains in 6 seconds. Are you one of them? Test your observation skills now!

You have 1023 apples and 10 bags. You have to distribute these apples in these 10 bags in any way you choose. But when I ask for a certain number of apples you have to give them in terms of bags without transferring the apples from other bags. How do you distribute the apples?

What is the probability of choosing the correct answer at random from the options below?

a) 1/4
b) 1/2
c) 1
d) 1/4