Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

If,

Akriti = 631
Levis = 521
Sroti = 521
Aneel = 533
Then,
Sunil =?

A number can be multiplied by multiple of nine
i.e 9 18 27 36 45 ...

and the resulting number consist of only one digit.

Can you identify the number ?

Count the squares in the matchstick puzzle below?

If six children and two dogs were under an umbrella, how come none of them got wet?

If,
29 - 1 = 30
9 - 1 = 10
14 - 1 = 15

Based on similar logic, Can you prove that the below algebraic equation is true?
11 - 1 = 10 ?

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

Can you complete the sequence?

192, 021, 222, 324, 252, 627, 2__, 9__?

A new clothing store has a unique method of pricing items. A vest costs $20, a tie costs $15, a blouse costs $30, and underwear costs $45. How much would pants cost?

John can place six large boxes or nine small boxes into a carton.

Can you find out in how many cartons can he place sixty-six boxes in total?