Q.1 Which of the following has largest area?
1. A circle of radius/2
2. A square with side 2 cm
3. An equailateral triangle of sides 2 cm.
4. A triangle of sides 3, 4 and 5 cm
Q.2 In a right angled triangle, the product of two sides equal to the
half of the square of the hypotenuse. One of the acute angle is
(1). 15' (2).30'(3)45'(4)60'
Q3. The arithmetic mean of 100 observations is found to be 50. If at
the time of computations two items are wrongly taken as 30 and 29
instead of 3 and 92. The correct means is
(1)50,20 (2)50,36 (3)51,15 (4)51,45
Q.4 The standard deviation of the set of no. 1,4,5,7,8,10,12,13,15,17
is 4.85. If 10 added in each numbers, then S.D of new set is..
(1)48.50 (2)4.85 (3)0.485 (4) none of these
Q.5 If the arithmetic mean of all the terms of table is 40 and median
is 50, then the mode of this table may be
(1)40 (2)50 (3)60 (4)70
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*Regards*
Jay Shanker