Question
There are thirty balls in my cupboard in complete
disarray. Ten are black, ten are red and ten are brown, but I cannot distinguish the colors in the dark. How many balls should I take from the cupboard so that there is at least one pair of the same color?Solution
Total number of balls = 30 There are 3 colored balls present in 30 balls. When we take out 3 balls, there is a possibility that all three balls may be of different colors. But when we take out 4 balls (at least), then two balls of one color will come out. Hence, there will be a pair of the same color present in 4 balls.
((67)32 × (67)-18 / ? = (67)βΈ
What will come in the place of question mark (?) in the given expression?
?% of (112 X 3 + 164) + 75 = 2 X 140 + 35
20% of 450 - 15% of 400 = 25% of ?
β121 + β961β β289 =?2
45% of 1020 + ?% of 960 = 747
(γ(0.4)γ^(1/3)Β Γ γ(1/64)γ^(1/4)Β Γ γ16γ^(1/6)Β Γ γ(0.256)γ^(2/3))/(γ(0.16)γ^(2/3)Β Γ 4^(-1/2)Β Γγ1024γ^(-1/4) ) = ?
(512) (2/3) Γ β64 Γ· (512) (1/3) = (64) (?/2) Γ· (2)6Β
1231 + 1312 + 2113 β 3211 = ?
Simplify the following expression:-
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