Question
A Student was asked to add 8 and subtract 5 from a
number. By mistake, he added 5 and subtracted 8. If his answer is 11, what should be the correct answer?Solution
Let the number be x And the correct answer be y According to the question x + 8 – 5 = y x + 3 = y ...................(i) Again, x + 5 – 8 = 11 x = 14 Put the value of x in (i) We get, 14 + 3 = y y = 17
A car moves 144 km in 4 hours. The bike goes 1.5 m/s slower than the car. What distance (in metres) does the bike cover in 6 minutes 20 seconds?
Find the smallest number which when divided by 3, 4, 5 and 6 gives remainder ‘2’ in each case?
- The L.C.M and H.C.F of two numbers have a sum and difference of 440 and 120. If one number is 40, find the other.
The HCF and LCM of two numbers, A and B, are 14 and 196, respectively. The difference between these two numbers is 28. Find their sum.
The HCF of two numbers is 13. Which of the following can never be their LCM?
What is the difference between the LCM and HCF of 36, 40?
LCM of two numbers is 5 times their HCF. The product of the numbers is 4500. What will be the maximum possible difference between the numbers?
The greatest number, which when subtracted from 1063, gives a number exactly divisible by each of 15, 20, 30 and 35, is:
- If the product of two numbers is 144 and their HCF is 6, then find the LCM of the given two numbers.
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