What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

Can you make a six-letter word using the letters N, A and B ?

Name a key which is hardest to turn.

During which month do people sleep the least?

What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

Can you place three balls such that the equation shown in the picture holds true?

If,

A = 1

B = 2

C = 3

...

...

Z = 26.

Based on above rule, you need to find an eleven letter word whose letter sum is equal to 52.

In a particular village, only two barbershops exist.

The first shop has a handsome barber with a neat haircut who is handsomely dressed in clean clothes and is extremely humble with his body language. The place is clean and looks hygienic.

In the second shop, you can find a barber with shabby clothing. His hairs are weirdly cut and his clothes still have the stains from last night's dinner. The place is not clean as well and reeks a bit.

You visit the village for the first time and decide to get your haircut. Which barbershop will you like to go for that and why?

What number comes next in the series?

5 15 5 18 5 24 14 20 _

Which five letter word can be added at the end of below word to form a
valid word?

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