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Permutations And Combinations
The number of ways in which first prize may be given = 10.
Number of ways in which second prize may be given = 10.
Number of ways in which third prize may be given = 10.
∴ By fundamental principle of counting, the total number of permutations
= 10 x 10 x 10 = 1000
ALTERNATIVELY : n = 10, r = 3
Number of permutations (for repeat case) = n^{r} = 10^{3} = 1000.
Sponsor Area
Determine K, so that K + 2, 4K – 6 and 3K – 2 are three consecutive terms of an A.P.
Sponsor Area