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If a + b = 7 and ab = 12, then a2 + b2 is equal to:
Two plates with diameters 3.5 cm and 2.5 cm are kept one above the other. The larger plate is placed at the bottom. What is the total area of the larger plate in sq. cm that is visible?
A batsman has a certain average of runs for 58 innings. In the 59th inning he scores 117 runs there by increasing his average 1.5 runs. What will be his average after 59th innings.
The data of production (in million) on three types of medicines by three different companies is given below:
Which of the following gives the minimum production of a medicine by any company?
Angle subtended by a chord on the major arc of the circle in 50 degree. What is the angle subtended by the same chord on the centre of the circle?
An article is sold for Rs. 400 cash down or Rs.100 cash and three monthly installments of Rs. 105 each. The rate of interest at simple interest under installment plan is:
The perimeter of a semicircular instrument, whose radius is 14 cm, is
In a mixture of 624 litres, the ratio of milk and water is 5 ∶ 3. The amount of water to be further added to the mixture so as to make the ratio of the milk to water 5 ∶ 4 will be:
Study the following Pie-chart and the table. Answer the question based on them.
If the number of Kannada books in bad condition is 92, then total number of English books in the library will be:
The mean of 10 observations was calculated as 40. It was detected on rechecking that the value of one observation 45 was wrongly copied as 15. Find the correct mean.
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