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Problems on L.C.M and H.C.F

Find the greatest 4-digit number exactly divisible by 3, 4 and 5?

Mathematics Mcqs, Problems on L.C.M and H.C.F /
Find the greatest 4-digit number exactly divisible by 3, 4 and 5?

A. 9985
B. 9960
C. 9957
D. 9975
Explanation:
Greatest 4-digit number is 9999. LCM of 3, 4 and 5 is 60. Dividing 9999 with 60, we get remainder 39. Thus, the required number is 9999 – 39 = 9960.

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Mathematics Mcqs, Problems on L.C.M and H.C.F

A gardener was asked a plant flowers in a row containing equal number of plants. He tried to plant 6, 8, 10 and 12 in each row, but 5 plants left in each case. When he planted 13 in a row, no plant was left. Find the number of plants with him?

Mathematics Mcqs, Problems on L.C.M and H.C.F /
A gardener was asked a plant flowers in a row containing equal number of plants. He tried to plant 6, 8, 10 and 12 in each row, but 5 plants left in each case. When he planted 13 in a row, no plant was left. Find the number of plants with him?

A. 245
B. 125
C. 485
D. 845

A gardener was asked a plant flowers in a row containing equal number of plants. He tried to plant 6, 8, 10 and 12 in each row, but 5 plants left in each case. When he planted 13 in a row, no plant was left. Find the number of plants with him? Read More »

Mathematics Mcqs, Problems on L.C.M and H.C.F