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A biology class at high school predicted that a local population of animals will double in size every 12 years. The population at the beginning of the ...
24 men and 12 women can do a piece of work in 30 days. In how many days can 12 men and 24 women do the same piece of work?
There is a numeric lock which has a 3-digit PIN. The PIN contains digits 1 to 7. There is no repetition of digits. The digits in the PIN from left to r...
On one side of a 1-01 km long road, 101 plants are planted at equal distance from each other. What is the total distance between 5 consecutive plants?
When a certain number is multiplied by 7, the product entirely comprises ones only (1111…..). What is the smallest such number ?
A man completes 7/8 of a job in 21 days. How many more days will it take him to finish the job if quantum of work is further increased by 50%?
What does the author mean by poverty of a life?
Which of the following is/are correct?
1. They take 5 hours to meet.
2. They meet midway between A and B.
Select...
Consider all 3-digit numbers (without repetition of digits) obtained using three non-zero digits which are multiples of 3. Let S he their sum.
The digits 1 to 9 are arranged in three rows in such a way that each row contains three digits, and the number formed in the second row is twice the nu...