Three pipe P, Q and R can fill a tank in 12 minutes, 18 minutesand 24 minutes respectively. The pipe R is closed 12 minutesbefore the tank is filled. In what time the tank is full?
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A can do a work in 16 days and B in 20 days. If they work on it together for 8 days, then what fraction of work is left?
ΔXYZ is right angled at Y. If cosX = 3/5, then what is the value of cosecZ ?
√(cosec2 - 1)/cosecA is equal to?
α and β are the roots of the quadratic equation x2 – x – 1 = 0. What is the value of α8 + β8?
If 7 times the seventh term of an Arithmetic Progression (AP) is equal to 11 times its eleventh term, then the 18th term of the AP will be
Which one of the following is the minimum value of the sum of two integers whose product is 24?
If the loss of percent on article is 15%. Then the ratio of the cost price and sell price will be
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