Infosys
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Numerical Ability
Permutation and Combination
Two size of envelope having color of red,blue, purple ,green..company made packages of three envelopes either same size same color or same size different color...how many packages possible if sequence of color doesn't matters?
Read Solution (Total 4)
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- For same colour four combinations r possible GGG,RRR,BBB,PPP
Four diff color four combinations r possible
GBR,GRP,GBP,RBP
So total 8 combination for each size
So no. Of package==16 - 10 years agoHelpfull: Yes(26) No(4)
- i think ans is 56
2c1*4c1 + 2c1 * 4c3 * 3! =56.. correct?
- 10 years agoHelpfull: Yes(5) No(6)
- i think ans is 42
3(2c1*4c1) + 2c1*(4+3+2) =42 - 10 years agoHelpfull: Yes(3) No(0)
- (2c1*4c2)+(2c2+4c1)
- 10 years agoHelpfull: Yes(0) No(1)
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