Question

Q1.A swimming pool can be filled in 24 hours by 5 equal pumps. How many such pumps are required  to fill the pool in 6 hours?

Q2.Show that (a-b)(a+b) + (b-c)(b+c) + (c-a)(c+a) = 0.

Q3. Mr. Abhishek Sengupta wants to donate some cycles to an orphanage. He has money to buy 25 cycles worth Rs. 500 each. How many cycles will he be able to donate if each cycle  is costing Rs. 125 more?

Q4. The sum of four consecutive numbers is 10 times the smallest number. Find the four numbers.

Q5. Find the value of

2012

397 × 403

Q6. How many natural numbers are there between 1000 2 and 1001 2.

Q7. Find the value of x, if 12x  =  (16)2 – (4)2

Q8.Jimmy has 2 times as many 25 paise coins as 50 paise coins . If he has a total of Rs. 3.00, how many coins of each kind does he have ?​

Answer 1

Answer:

1. 3 is answer I think so