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Total numbers formed = 5! = 120 For divisibility by 5, the number must end in either 0 or 5. But 0 is not among the digits, so only 5 can be at the unit place. Fix 5 at the end → Remaining 4 digits can be arranged in 4! = 24 ways Total such numbers formed = 24 × 1 = 24 Required probability = 24 / 120 = 1 / 5
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If 4 kg of metal of which 1/3rd is zinc and the rest is copper, be mixed with 5kg of metal, of which 1/6 is zinc and the rest is copper, then...
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A mixture contains liquid A and liquid B in the ratio of 5:3, respectively. If 12L of liquid B is added to this mixture, the respective ratio of liquid ...
A container contains Alcohol and water in ratio of 3:5 and Capacity of Container is 160 lit. If half of the Container is replaced with 40 lit of water t...
