Math Chapter Wise question with answer

Q01 If n Pr =840 and n Cr=35, then value of r is: English · KVS PGT 2022 Q02 In how many ways can 8 Indians, 5 Americans and 4 Englishmen can be seated in a row such that all persons of the sa... English · OAVS TGT 2018 Q03 20 persons were invited for a party. What is the number of ways in which they and the host can be seated at a circu... English · UKPSC GIC 2018 Q04 The number of committees of five persons including a chairperson can be selected from 12 persons, is: English · KVS PGT 23-12-2018 Q05 Seven persons are to be seated in a row. The probability that two particular persons sit next to each other is– English · DSSSB TGT (SECTION-B) 28 DEC 2014 Q06 If there are 12 persons in a party and if each of them shake hands with each other, then number of hand shakes in p... English · DSSSB TGT (SECTION-B) 28 DEC 2014