A takes 2 hours more than B to walk d km, but if A doubles his speed, then he can make it in 1 hour less than B. How much time does B require for walking d km?
A computer takes 50 nanoseconds to do an addition. How many additions can it do in 1 second?
A library has an avearage of 510 visitors on Sunday and 240 on other days. What is the average number of visitors per day in the month of June beginning with a Sunday?
A garden has to plant tress in rows containing equal number of trees. If he plants in rows of 6,8,10 or 12. then five tress are ledt unplated. But if he plants in rows of 13 tress each, then no tress is left. What is the number of tress that the gardener plants?
What is value of 0.0010.1×0.1
Afte getting two successive discounts, a shirt with a list price of 150 taka is available at 105 taka. If the second discount is 12.5% fins the first discount?
In a simultaneous throw of two dice what is the probability of getting a doublet?
If the ratio of two numbers is 3:3 and their L.C.M is 84, then find the greater number.
If selling price is doubled, the profit triples, Find the profit percent.
If x-3-0.001=0, find x2=?
P is a point lying on the line segment AB. Which of the following relation is applicable for all time?
How many degrees does a minute hand move in 20 minutes?
What will be the differemce between simple and compund interest at 10% on a sum of TK. 500 fter 5 years?
If one star equals four circle and three circles equal four diamonds, then what in the ratio of star to diamond?
IFQP=14what is the value of p+Qp-Q?
What is the sum of two consecutive even numbers the difference of whose squares is 84
One fifth of a number is eual to 5/8 of another number, it becomes four times of the second number. The second number is -
Which is the correct factor analysis of x2-2xy-z3+2yz?
If a.b,c are the lengths of the sides of a traiangle, then which of the following is true?
If x and y arenegative integers and x-y=1, what is the least possible value for xy?
If two non-zero positive integers p and q are such that p=4q and p<8, then q=?
If (15)3y=0.008, then find (0.25)y=?
Roni can walk a certain distance in 410 days when he rests 9 hours a day. How long will be take to walk twice the distance, twice as face and rest tvwice as long each day?
If x-y=3 then what is the value of x3-y3-9xy?