The genetic ratios are matched with the gene actions as follows: A. Duplicate genes: 15:1 B. Inhibitory genes: 13:3 C. Complementary genes: 9:7 D. Supplementary genes: 9:3:4
7 children are to be selected from a group of 8 boys and 6 girls. In how many ways will the children with at most 3 girls and at least 4 boys be selected?
There are 10 boys and 15 girls in the commerce class. Three students are selected at random. The probability that two girls and one boy are selected is.
A Consignment of 12 mobile phones contains 4 defectives. The mobile phones are selected at random one by one and examined. The ones examined are not pu...
Among a set of 4 black balls and 3 white balls, how many selections of 3 balls can be made such that at least 2 of them are black balls?
In how many ways a Cricketer can make a Double century with fours and Sixes only?
There are 10 boys and 15 girls in the commerce class. Three students are selected at random. Find the probability that 2 girls and 2 boys are selected.
How many words can be formed from the word INCREASE in which both E’s do not come together?
In an election, a voter can vote for any number of candidates not exceeding the number to be elected. There are 7 candidates and 4 members to be elected...
How many even five-digit numbers can be formed using the digits 0 to 9 if no digit is repeated?
In how many different ways can the letters of the word 'COMPUTER' be arranged in such a way that the vowels always come together?
