A can do a piece of work in 10 days, B can do it in 12 days and C can do it in 15 days. In how many days will A, B and C finish it, working all together?
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P and Q can complete a task in 50 and 20 days respectively. In how many days can they complete 70% of the task if they work together?
An engineering student has to secure 25% marks to pass. He gets 56 and fails by 34 marks. Find the maximum marks.
The value of (0.3)2/100=?
If a2+b2c2 = b2+c2a2 = c2+a2b2 = 1k k≠0 then k =
If x + 1/x = 6, then value of x2 + 1/x2 is
If x + y = 12 and x2 + y2 = 94, then xy is
What is the value of [(cos 7A + cos 5A)÷(sin 7A – sin 5A)]?
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