Self Maths Puzzle Numerical Ability

if a team of four persons is to be selected from 8 males and 8 females , then in how many ways can the selection be made to include at least one male
a)3500
b)875
c)1750

Read Solution (Total 5)

8C1*8C3 + 8C2*8C2 + 8C3*8C1 + 8C4 = 64+784+64+70 = 982
10 years agoHelpfull: Yes(2) No(2)

1750 is correct

rakesh your calculation mistake in 8c1*8c3

please check it
10 years agoHelpfull: Yes(2) No(1)
1750 ans
10 years agoHelpfull: Yes(1) No(0)
1750 is correct ans.
8 years agoHelpfull: Yes(0) No(0)
Total ways=16c4
Selecting no male=8c4
Required ans.=16c4-8c4=1820-70=1750
7 years agoHelpfull: Yes(0) No(0)

Self Other Question

find the number of numbers that can be formed using all the digits 1,2,3,4,3,2,1 only once so that the odd digitts occupy old place only?/ A cheetah spots a gazelle 300 m away and sprints towards it at 100 km/h. At the same time, the gazelle runs away from the cheetah at 80 km/h. How many seconds does it take for the cheetah to catch the gazelle?