Q1.Find the product of all the factors of 45.
Ans - 45^3
Q2. Number of zero at the last of 2𝑁!/𝑁
N is a multiple of 10.
Ans - 0
Q3. In a school, each class of a primary standard is of 40 minutes, and each class of a secondary standard is of 60 minutes. School bell rings for both the standard after each class gets over. For how many time the bell rings in common for both primary and secondary class when the 1st class of each standard starts at 7:00 AM and finishes at 12:20 PM (Note: no recess break is given in between)
Ans - 2
Q4. Number of factors of 3003
Ans - 16
Q5. Red, Green and Yellow light of a traffic signal blinks at an interval of 15 second, 20 second and 25 second. If they all blinks together at 9:00 AM then at what time they will again blink simultaneously.
Ans - 9:05 AM
Q6. Rs 102 is divided among Juhi, Jitender and Jatin such that for every rupee received by Jatin, Juhi receives 50 paisa and for every rupee received by Juhi, Jitender received 40 paisa. Find the Amount (in Rupee) received by Jitender.
Ans - 51
Q7. Find the least common multiple of the following
7/11,22/26,169/192
Ans - 26026
Q8. Find the unit digit of 261×393×411×83
Ans - 8
Q9. Find the Greatest Common Divisor of the following Numbers
12−3, 0.8, (0.4)3, 212−3, 0.8, (0.4)3, 2
Ans - 0.002
Q10. Find the Sum of all the factors of 240
Ans - 744
Q11. A and B represents the numbers of even and odd factors of 120 respectively. Find the ratio between A and B.
Ans - 3:1
Q12. A pickpocket stole the wallet of Mr. Jitender. Jitender remembers that before he lost his wallet he bought a notebook and a marker. He pays 15𝑡ℎ15th of his money for buying the notebook, and of the remaining, he spends 20% on buying marker which is equal to Rs.12. Find the amount of money lost by Mr. Jitender.
Ans - 48
Q13. A number when divided by 4 ,5 and 6 leaves remainder 1 each time. Find the least possible value of
Ans - 61
Q14. Atul, Abhinay, Rahul and Anju purchase a gift worth ` 1260. Atul pays 1212 of what others are paying. Abhinay pays 2525 of what others are paying and Anju and Rahul pays equal amount. Find the amount paid by Rahu
Ans - 240
