A school has only 3 classes having 20, 30 and 40 students respectively. The percentages of students passed are 30%. 50% and 60% respectively. Find the percentage of passed students of the entire school.
Find the least five-digit number which can be divided by 8, 12, 16 and 20 leaving remainders 1. 5, 9 and 13, respectively.
A frog is sitting on vertex A of a square ABCD. It starts jumping to the immediately adjacent vertex on either side in random fashion and stops when it reaches point C, in how many ways can it reach paint C if it makes exactly 7 jumps?
The sum of four consecutive even integers is 60. What is the value of the largest number?
The numbers 11, 12, 14, x-2, x+4,x+ 9, 32, 38, 47 are arranged in ascending order and the median is 24: find x.
28 is divided into two parts such that 6 times the first part added to 4 times the second part makes 152. The first part is
The denominator of a fraction is 5 more than the numerator. If the numerator as well as the denominator is increased by 3, the fraction becomes 5/9. The original fraction is
Two baskets together have 640 oranges if one-fifth of the oranges in the first basket be taken to the second basket then, number of oranges in both baskets become equal. The number of oranges in the first basket is
The value of p, for which the equation x² (p - 3)x + p = 0 has real and equal roots is
3log102+3log155=?
If four fair coins are flipped, what is the probability that they all will come up heads?
If the ratio of principal and yearly amount be in the ratio 25: 28, then the yearly rate of interest is
What is the greatest possible area of a triangle with one side of length 7 and another side of length 10?
If 0≤x≤ π/2, What is the maximum value of cos (x/3)?
A sport club has 50 members. Of these. 35 play golf, 30 play soccer and 18 play both golf and soccer. How many members do play nether golf nor soccer?
8
৫
3
17
If cot (x-30°)=1/√3, sin x=?
If cos1θ-sin2θ=x, then 1+ cos2θ-sin4θ=?
Given the equations below, what is the value of mn? 2(m + n) + m-9; 3m - 3n =24
The height of a cylinder is four times the radius of the cylinder. If the volume of the cylinder is 256 cm², what is the radius of the cylinder.
A sum of money placed at compound interest doubles itself in 4 years. In how many years will it amount to 8 times itself?
If a principal p becomes Q in 2 years when interest R% is compounded half yearly. And if the same principal P becomes Q in 2 years when interest 8% is compound annually, then which of the following is true?
If f(x)=2x-1 and g(x)=x², what is the value of f(g(-3))?
If angle B of isosceles triangle ABC is a right angle, what is the tangent of angle A?
If the total surface are of a hemisphere be 36. sq. cm, then its radius is
3√2 cm
3√3 cm
√3 cm
2√3 cm
If a= √2+1 and b=√2-1, then the value of 1a+1+1b+1 is
The city library donated some books to a class. If each student takes 4 books. there will be 20 books left. If 3 students do not take a book and the rest of the students take 5 books each, there will be no books left. How many books were donated to the class?
The interior angles of a polygon are in AP. The smallest angle is 120° and the common differences is 5". Find the number of sides of the polygon.
What is the arithmetic mean of the first 100 natural numbers?