MBA Exam

Find the number of positive integral solutions of the inequality 3x + y + z ≤ 30?plz explain in details how to calculate the answer!!

1) I will explain....

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MBA Other Question

A Child has 10 number cubes , with a different no. from 0 to 9 printed on it. each cube bears only one single digit no. The child misses the cubes with number 3,4,7,9 and 0. how many two-digit number the child has missed due to missing cubes ?

1) 120
2) 65
3) 20
4) 90
A box contains 20 tickets of identical appearance, the ticket being numbered 1, 2 , 3.....20. In how many ways can 3 tickets be chosen such that the numbers on the drawn tickets are in arithmetic progression?If sumone cud post the approach it wud be gr8

1) 18
2) 33
3) 56
4) 90
5) 84