Let, monthly income of A is Rs. x So, 0.8 × 0.65 × x = 1047.8 So, x = 2015 Amount spent on study = 0.20 × 2015 = Rs. 403
In how many different ways can 4 blue beads and 3 red beads be arranged in a row such that all the blue beads are together and all the red beads are tog...
In how many different ways can the letter of the word ‘STRONG’ be arranged?
How many 6-digit numbers can be formed from the digits 0,3,4,5,6 and 8, in which the digits are not repeated?
In how many ways can 3 boys and 2 girls can be seated in a row so that they are in alternate position.
A person has 12 friends out of which 7 are relatives. In how many ways can he invite 6 friends such that at least 4 of them are relatives?
In how many ways can the letters of the word VOWEL can be arranged so that all the consonants occupy odd places, vowels come on even places?
In how ways can the selection be made so that a particular member is always included?
How many different words can be made using all the letters of the word METROLOGY?
Four dice are rolled simultaneously. What is the number of possible outcomes in which at least one of the die shows 2?
In how many different ways can 6 boys and 3 girls to be seated in a row such that all the boys seated together and all the girls seated together?
