17×1 + 4 = 21 21×2 + 9 = 51 51×3 + 16 = 169 169×4 + 25 = 701 701×5 + 36 = 3541
A bowl contains 9 blue balls, 7 white, and 5 black balls. If 2 balls are drawn in one go, then the probability of exactly one ball being blue is:
If the letter of the word Apples is arranged at random, what is the probability that all the vowels comes together?
There are 14 boys and 6 girls giving interview for a job. If three of them are selected, then what is the probability that one of the three is a girl an...
In a lottery there are 5 prizes and 50 blanks. A lottery is drawn at random. What is the probability of getting the prize?
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A container holds (x + 10) marble stones, (x + 12) quartz stones, and (x + 20) granite stones. The probability of drawing a granite stone is (5/12). Fin...
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A box contains 7 blue and 7 green balls. The probability of drawing three balls of the same colour is
Three cards are drawn one after another with replacements from a pack of cards. What is the probability of getting the first card a Jack, the second car...
Tokens numbered 1 to 350 are in a bag. What is the probability that the Token drawn has a number which is a multiple of 6 or 7?
