Simple mathematics

Buttercup, has had 15 kittens, born in two litters. Buttercup had 7 more kittens in her second litter than her first. How many kittens did she have in each litter?

Molly uses 192 beads to make a bracelet and a necklace. It takes 5 times as many beads to make a necklace than it does to make a bracelet. How many beads are used to make the necklace?

i can't do 63 divided by 17 or 138 divided by 42 and i can't think of any other division problems with a quotient of 12 and a remainder of 3

if you divide it by 2, 3, 4, 5, or 6 you will geta remainder of 1.  If you divide it by 11, the remainder is 0. What number is this?  How do I figure that out?

Its not a trick question, I am sincerely struggling to find the answer. List of prime numbers says that is it not prime, so it HAS to divide by SOMETHING. OCD has led me to this.

How do I solve this question it's hard

5,6/5 = 1,12, but when i set it up i get 1,11. i think 5 goes into 5 one time ( 1,) 5 goes into 6 one time. leaving 1 in rest. ending up with 1,11. ?