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+5
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permutation combination
How many A.P's with $10$ terms are there whose first term is in the set$\{1,2,3\}$ and whose common difference is in the set $\{1,2,3,4,5\}$ ?
asked
Jan 23, 2018
in
Numerical Ability

163
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permutationandcombination
+3
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1
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2
Permutation Combination
How many natural number not exceeding 4321 can be formed with the digits 1, 2, 3, 4, if the digits can be repeated?
asked
Jan 23, 2018
in
Numerical Ability

147
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permutationandcombination
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