61.

If tan²x + cot²x is

• 3

• 2

• 0

• 1

While selling a watch, a shopkeeper gives a discount of 5%. If he gives a discount of 7%, he earns â‚¹ 15/- less as profit. The marked price of the watch is

• ₹ 697.5

• ₹ 712.5

• ₹ 750

• None of these

What least value must be assigned to '*' so that the number 63576*2 is divisible by 8?

• 1

• 2

• 3

• 4

A student, by mistake, wrote 64 in place of 46 as a number at the time of finding the average of 10 given and got the average as 50. The correct average of the number is:

• 48.2

• 48

• 48.1

• 48.1

If  and  x,  y are positive integers, then the value of 

• 1

• 2

• 

• 5

The cube of 997 is

• 991026973

• 991029673

• 991029773

• 991097273

Length of the sides of a triangle area a, b, c respectively. If a² + b² + c² = ab + bc + ca, then the triangle is

• Isosceles

• Equilateral

• Scalene

• Right-angled

The area of the circle with radius Y is W. The difference between the areas of the bigger circle (with radius Y) and that of the smaller circle (with radius X) is W'. So X/Y is equal to:

If  then   is equal to

A right circular conical structure stands on a circular base of 21 m diameter and is 14 m in height. The total cost of colour washing for its curved surface at 6 per sq m is (Take ) 

• 4365

• 4465

• 3465

• 3365