The sum of two numbers is 22 and the sum of their squares is 404 . the product of two numbers is-
If t is and odd integer, which of the following must be an even integer?
One of the factors of x4+x2+1 is-
If x+1/x=3 then x-1/=?
If logx625=4 then x=?
If the rate if interest is 10 % per annum and is comunded half yearly , the principal of Tk.l 4000 in years will amount to-
A tap can fill a tank in 6 hours . After half the tank is filled another simila tap is opened. What is the total time taken to fill the tank completely?
The LCM and HCF of two numbers are 90 and 15 respectively . If one number is 45, the other number is-
If 5% is gained by sellign an article for Tk 350 then cost of the article is-
If sec (x- 30°) =23, tan x=?
A sum of money at simple interest amounts to TK. 5600 in 2 years and Tk. 6500 in 5 years at the rate of -
When bent in the form of a circle a wire has a radiud of 28 cm. If it is bent int he form of a square. what will be its area in cm?
What is the largest number tha divides 84,144 or 36 without any remainder?
The ratio of two numbers is 7:4 If 8 is added to both the number ration becomes 13:8. What is the smaller number?
How many 5 will you pass on the way when you count from 1 to 100?
The total surface area of a hemisphere of radius r is -
A mixture of 20 kg of spirit and water contains 10% water . How much water must be added to mixture to raise the percentage of water to 25%
The height of a equilateral traingle with a side 2 cm is-
3cm
23cm
32cm
5cm
Which one of the following nunbers can be removed from the set S = {0, 2, 4 ,5 9} without changing the average of set S?
The area of a rhombus is 96 cm2 and the length of one of the fiagonals is 16 cm. The length of the other diaginal is-
If 1+sinθ=xcosθ, then tanθ=?
What is probability than an integer selected at random from those between 20 ans 100 inclusive is a multiple of 15?
The area of a triagnle with sides 3cm , 5 cn, 6 cm is-
An electric pole casts a 3 m long shadow on the ground at an elevation 60°, the height o fthe pole is-
The second and third term of a geometric series are 9 and 3 respectivelt ,. The 6 th term of the series is-
The next number in the sequence 3, 4,8,17,33,.....is-
The inverse of f(x) =2x-1 is
The largest prime factor of (24)2-1 is -
Find the value of k if (x-1) is a factor of 4x2+3x-4x+k.
What is the unit digit in the product 84×59×13×76?