School calculators are sold by one company only in one packages of 11 and packages of 15. What is the largest number of calculators it is not possible to purchase without opening a package?

I'm trying to solve a number sequence question that goes like this: 15, 14, 30, ? This question gave four options, 29, 28, 27, and 26. I think that 29 and 28 are both correct but this only accepts one answer. 29 is correct since 15 -1 = 14, then 14 + (15+1) = 30, so its plus then minus, so 30-1=2...

I ask your gloves without 2 sides Just want to ask the meaning of this sentence?

I had lived with the monkeys, I may fart like the skunks, I can sing like a nightingale, I eat like a tiger. I can ruin or save the world, As how the jungle gods did. I can build a shelter like a beaver, What do you think I am?

It's a dark, cold night. The only warmth our company has is a small fire as not to be seen by the enemy. Alas! There is a spy amongst us... The only clue to who the spy is, a cypher written on a small strip of paper passed from an unknown informant. Who is the spy? TEMENARQVTAZAKNPFDPONOTSLMENNZJ...

Another of my friend gave me this code to show where he live: RODA, NAYU, GURU, GARA, MOLO, ZENE, LIZA, ANIT, ELIH, IVIL, ANIR Can you figure out where he lived

This puzzle is from Martin Gardner. You are given 16 cards containing all aces, kings, queens and jacks from a standard deck of cards. Can you arrange them in a 4x4 grid such that each row and each column contain all four suits as well as one of each face value? Bonus question: in addition to the...