by shivamtripathi22 | Mar 12, 2022 | Uncategorized
(Q). Given 6 different green dyes, 5 different blue dyes & 4 different red dyes, the number of combination of dyes which can be chosen taking at least one green & one blue dye is?Solution:- one or more (at least one) green dye can be chosen in ⁶C₁ + ⁶C₂ + ⁶C₃...
by shivamtripathi22 | Mar 12, 2022 | Uncategorized
(Q). How many different sums can be formed with the following coins:⟶ one 1 ruupee, one 50 paise, one 25 paise, one 10 paise & one 5 paise coins? Solution:- Method (1).Every coin has 2 ways of selection:⟶ either selected or not...
by shivamtripathi22 | Mar 12, 2022 | Uncategorized
(Q). At an election three wards of a town are canvassed by 6, 7 & 10 men repectively. If there are 30 volunteers, in how many ways can they be allotted to different wards?Solution:- 1st we will select 6 out of 30 in ³⁰C₆ ways then next 7 out of 24 in ²⁴C₇ ways...
by shivamtripathi22 | Mar 12, 2022 | Uncategorized
(Q). In how many ways 5 vowels & 6 consonants can be selected from 26 letters of alphabet?Solution:- vowels = a, e, i, o, u ⟹ total 5∴ 5 vowels can be selected only 1 way& 6 consonants can be selected from 21 consonants in ²¹C₆ waysHence total number of ways =...
by shivamtripathi22 | Mar 12, 2022 | Uncategorized
(Q). Find the number of ways of selecting 11 players from a group of 35 iplayers such that the oldest & the youngest players are always included in the group.Solution:- Since the oldest & the youngest players i.e. 2 particular players are always included in...
