১২১৯১
Given that 1 2 + 2 2 + 3 2 ..... + 10 2 = 385, what is the value of 3 2 + 6 2 + 9 2 + .....30 2 ?
উত্তর
3,465
১২১৯২
An iron rod that weighs 24 kg is cut into two pieces so that one of these pieces weighs 16 kg and is 34 m long. If the weight of each piece is proportional to its length, how long is the other piece?
উত্তর
17 m
১২১৯৫
By selling a bicycle for Tk. 2850, the shopkeeper gains 14%. If profit is reduced to 8%, then the selling price will be:
উত্তর
Tk. 2700
১২১৯৬
if a + b + c = 15 and a 2 + b 2 + c 2 = 83, what is the value of ab + bc + ac?
উত্তর
71
১২১৯৭
A pipe can fill up an empty tank in 14 minutes. Another pipe flows out 12 liters of water per minute. If the two pipes are opened together and the empty tank is filled up in 98 minutes, how much water does the tank contain?
উত্তর
196 liter
১২১৯৮
What is the area of the triangle ABC? i) ABC is a right-angle triangle ii) The lengths of the longest and the shortest sides of ABC are 13 meters and 5 meters respectively-
উত্তর
Both i and ii
১২১৯৯
What is the value of 'm'? i) The number m yields a remainder p when divided by 14 and a remainder q when divided by 7 ii) p - q = 7
উত্তর
Both i and ii
১২২০০
Read the following passage and select the most appropriate answer. Nine books are to be arranged from the left to right on a shelf. Of these, four books are leather-bounds, three are cloth-bounds and remaining books are paperbacks. The leather bound books must be together. The paperback books must also be together. The cloth bound books need not to be together. The cloth-bound books must be next to each other, if a paperback book is in which the following position?
উত্তর
the seventh