For the following questions answer them individually
D and E are the midÂpoints of AB and AC of ΔABC; BC is produced to any point P; DE, DP and EP are joined. Then,
The mean of 19 observations is 24. If the mean of the first 10 observations is 17 and that of the last 10 observations is 24, find the 10th observation.
A watch is sold at a profit of 30%. Had it been sold for Rs. 80 less, there would have been a loss of 10%. What is the cost price in rupees ?
A train overtakes two persons who are walking in the same direction in which the train is running, at the rate of 2 kmph and 4 kmph and passes them completely in 9 and 10 seconds respectively. The length of the train (in metres)
The length of the common chord of two circles of radii 15 cm and 20 cm whose centres are 25 cm apart is (in cm) :
If a commission of 10% is given on the marked price of a work, the publisher gains 20%. If the commission is increased to 15%, the gain percent is:
If $$2\sqrt{x} = \frac{\sqrt{5}+\sqrt{3}}{\sqrt{5}-\sqrt{3}} + \frac{\sqrt{5}-\sqrt{3}}{\sqrt{5}+\sqrt{3}}$$
If 12 men or 18 women can reap a field in 14 days, then working at the same rate, 8 men and 16 women can reap the same field in :
Day-wise Structured & Planned Preparation Guide
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