221/((15+2)) + 221/((15-2)) = 13 + 17 = 30 hrs
Find the number of words formed by using all the letter of the word MEMBER, so that the vowels are always together.
...A committee of 4 people is to be formed from a group of 10 individuals. If 2 specific individuals refuse to work together, how many different committees...
In a Group of 8 boys and 6 girls, Six children are to be selected. In how many different ways can they be selected such that at least one boy should be ...
In how many ways can 7 beads be arranged to make a necklace?
In a party 19 persons shake hands with every other person. Find the total no of handshakes in the party?
In how many different ways can the letter of the word ‘STRONG’ be arranged?
In how many different ways can 6 History and 5Hindi books be arranged in a shelf so that they are arranged alternately?
In how many ways a Cricketer can make a Double century with fours and Sixes only?
Akshay has 7 relatives, 3 males and 4 females. His wife twinkle also have 7 relatives, 3 females and 4 males. In how many ways can they invite 3 male an...
Which of the following is TRUE for “complementary event or ‘not event’”?
