FactorsMultipleGCF and LCM

What is the product of (6a2b3c4) and (3a3b4c)?

• ক. 9a5b7c4
• খ. 9a5b7c5
• গ. 18a5b7c5
• ঘ. 18a5b7c4

Which of the following must be an integer if x is a positive integer and 4/x + 5/x + 6/x is also an integer?

• ক. x/30
• খ. 30/x
• গ. x/5
• ঘ. 5/x

3 & 5 are factors of F. We can conclude that--

• ক. 3 x 5 = F
• খ. 8 is a factor of F
• গ. F is multiple of 15
• ঘ. 3 & 5 are the only factors of F

The greatest common factor of two positive integers is A. The least common multiple of the two numbers is B. If one of the number is C, then what is the other one?

• ক. AB/C
• খ. BC/A
• গ. A/C + B
• ঘ. A + B/C

What is the largest number of apples not exceeding 440 that can be distributed among three persons in the proportions of 5 : 6 : 7?

• ক. 432
• খ. 420
• গ. 440
• ঘ. 430

What is the smallest number of apples that can be distributed equally among 4, 6, 9 or 15 students having a surplus of two apples each time?

• ক. 182
• খ. 62
• গ. 422
• ঘ. 362

Find the largest number of apples not exceeding 1000 which can be divided among 6, 15, 20 or 24 boys?

• ক. 990
• খ. 960
• গ. 930
• ঘ. 900

Find the smallest number of oranges that can be distributed completely & equally among 4, 6, 10 or 18 children?

• ক. 240
• খ. 180
• গ. 16
• ঘ. 60

What is the greatest number that divides 84, 144 or 18 without any remainder?

• ক. 24
• খ. 6
• গ. 18
• ঘ. 12

The difference between the number factors of 32 & 64 is:

• ক. 1
• খ. 0
• গ. 3
• ঘ. 2

If the product of three consecutive integers is 210, then the sum of integers is--

• ক. 12
• খ. 14
• গ. 15
• ঘ. 18

A clock falls behind 10 minutes each day. How many days will it take to reach a point where the clock will indicate the correct time?

• ক. 36
• খ. 40
• গ. 72
• ঘ. 90

A manufacturer of jam wants to make a profit of Tk.0.65 each to make first 100 jars and Tk.0.55 to make each jar after the first 100. What price would be charge for 300 jars of jam?

• ক. Tk.75
• খ. Tk.175
• গ. Tk.225
• ঘ. Tk.240

10 men survive 24 days on 15 cans of food. How many cans needed for 8 men to survive 36 days?

• ক. 15
• খ. 16
• গ. 17
• ঘ. 18

A collection of books went on sale and 2/3 of these were sold for Tk.2.30 each. None of the 36 remaining books were sold. What was the total amount received for the books that were sold?

• ক. 180
• খ. 135
• গ. 90
• ঘ. 60

If the co-operative (from the previous question) has the greatest number of members possible (with a minimum of Tk.240 contribution per member) and all members except one paid exactly Tk.240, then how much did the member who paid higher then the rest pay?

• ক. Tk.200
• খ. Tk.680
• গ. Tk.440
• ঘ. Tk.280

A co-operative collected Tk.5000 from its members. If each member contributed at least Tk.240. What is the greatest number of members that the co-operative could have?

• ক. 20
• খ. 21
• গ. 19
• ঘ. 22

Per column inch (1 column x 1 inch) area newspaper advertisment costs Tk.1200. How much would a "5 columns by 3 inches" newspaper advertisment cost?

• ক. Tk.3600
• খ. Tk.6000
• গ. Tk.9600
• ঘ. Tk.18000

If the population of a certain country increases at the rate of one person every 15 seconds, by how many persons does the population increase in 20 minutes?

• ক. 80
• খ. 100
• গ. 150
• ঘ. 240

The difference between two numbers is 7 and their product is 60, then one of the two numbers must be--

• ক. 4
• খ. 5
• গ. 6
• ঘ. 7

A man invests Tk.900000 in a share earning Tk.9 as divided per share, when a share of face value of Tk.100 is selling for Tk.150. What is his annual income?

• ক. Tk.54000
• খ. Tk.81000
• গ. Tk.15000
• ঘ. Tk.58000

2 bats and 2 balls cost Tk.300. 5 bats and 5 balls cost Tk.750. 3 bats and 3 balls cost--

• ক. Tk.400
• খ. Tk.450
• গ. Tk.500
• ঘ. Tk.550

A wheel rotates 10 times per minute and moves 20 feet during each rotation. How many feet does the wheel move in 1 hour?

• ক. 1200
• খ. 24
• গ. 12000
• ঘ. 18000

A man has 72 green marbles and 108 red marbles. He decides to pack them into packets of the same size, each containing either all red or all green marbles. What is the greatest number of marbles he can put in each packet?

• ক. 36
• খ. 24
• গ. 18
• ঘ. None of these

The sum of two numbers is 23 and difference is 21. What is the smaller of the two numbers?

• ক. 4
• খ. 3
• গ. 2
• ঘ. 1

A toy store regularly sells all stock at a discount of 20 percent to 40 percent. If an additional 25 percent were deducted from the discount price during a special sele, what would be the lowest possible price of a toy costing Tk.16 before any discount?

• ক. Tk.5.60
• খ. Tk.7.20
• গ. Tk.8.80
• ঘ. Tk.9.60

What is the minimum number of sweets that must be added to an existing batch of 240 sweets, so that the total batch can equally be devided among 2, 5 and 7 persons?

• ক. 15
• খ. 25
• গ. 40
• ঘ. 60

A full can of petrol weights 1.5 kgs. When half full it wights 1 kg. What is the weight of the empty Can?

• ক. 0.2 kg
• খ. 0.25 kg
• গ. 0.5 kg
• ঘ. 0.75 kg

In the figure below ACDH and BCEF are rectangles, AH = 3, GH = 3, GF = 3 and FE = 6, what is the area of BCDG?

• ক. 5
• খ. 10
• গ. 15
• ঘ. 18

Saif charges Tk.5.00 for every hour he works. Last week he worksd for 8 hours. He spent Tk. 12.00 of the money he earned. Which expression could he used to find how much he had left?

• ক. Tk.5.00 × 8 + Tk.12.00
• খ. Tk.5.00 × 8 - Tk.12.00
• গ. Tk.5.00/8 - Tk.12.00
• ঘ. (Tk.5.00 × 8)/ Tk.12.00

Mr. Mamun bought 73 rolls of film. He can take 24 pictures with each roll of film. What is the total number of pictures he can take with 73 rolls of film?

• ক. 1642
• খ. 1652
• গ. 1742
• ঘ. 1752

A number when divided by 105 leaves 99 as remainder. What will be the number if the number is devided by 21?

• ক. 9
• খ. 14
• গ. 20
• ঘ. 6