Number System
-  A number divided by 68 gives the quotient 269 and remainder zero. If the same number is divided by 67, the remainder is :
- 
                        View Hint View Answer Discuss in Forum According to question , 
 Number = 269 × 68 + 0
 Number = 269 × (67 + 1)Correct Option: BAccording to question , 
 Number = 269 × 68 + 0
 Number = 269 × (67 + 1)
 Number = 269 × 67 + 269
 Clearly, remainder is obtained on dividing 269 by 67 that is 1.
 Thus , required remainder is 1.
-  When a number is divided by 357 the remainder is 39. If that number is divided by 17, the remainder will be :
- 
                        View Hint View Answer Discuss in Forum Here, 357 is exactly divisible by 17. 
 ∴ Required remainder = Remainder obtained on dividing 39 by
 17Correct Option: CHere, 357 is exactly divisible by 17. 
 ∴ Required remainder = Remainder obtained on dividing 39 by
 17
 ⇒ 39 = ( 17 × 2 ) + 5
 Hence required answer is 5 .
-  (719 + 2) is divided by 6, the remainder is :
- 
                        View Hint View Answer Discuss in Forum Using the Binomial expansion , we have 
 (x + 1)n = xn + nc1 xn–1 +
 nc2 xn– 2 + ..... + ncn–1 x +1
 Here, each term except the last term contains x. Obviously, each term except the last term is exactly divisible by x.Correct Option: BUsing the Binomial expansion , we have 
 (x + 1)n = xn + nc1 xn–1 +
 nc2 xn– 2 + ..... + ncn–1 x +1
 Here, each term except the last term contains x. Obviously, each term except the last term is exactly divisible by x.
 Following the same logic,
 ∴ 719 = (6 + 1)19 has each term except last term divisible by 6.
 Hence, 719 + 2 when divided by 6 leaves remainder
 ⇒ 719 + 2 = 1 + 2 = 3
 Hence the remainder is 3.
-  A number, when divided by 119, leaves a remainder of 19. If it is divided by 17, it will leave a remainder of :
- 
                        View Hint View Answer Discuss in Forum On dividing the given number by 119, let k be the quotient and 19 as remainder. 
 Then, number = 119k + 19Correct Option: DOn dividing the given number by 119, let k be the quotient and 19 as remainder. 
 Then, number = 119k + 19
 number = 17 × 7k + 17 × 1 + 2
 number = 17 (7k + 1) + 2
 Hence, the given number when divided by 17, gives (7k + 1) as quotient and 2 as remainder.
 Hence , required remainder is 2.
-  The product of two numbers is 9375 and the quotient, when the larger one is divided by the smaller, is 15. The sum of the numbers is :
- 
                        View Hint View Answer Discuss in Forum Let the numbers be p and q and p is greater than q. 
 As given,
 The product of two numbers = 9375
 pq = 9375 .......(i)
 Again,p = 15 q 
 Correct Option: CLet the numbers be p and q and p is greater than q. 
 As given,
 The product of two numbers = 9375
 pq = 9375 .......(i)
 Again,p = 15 q 
 ⇒ p = 15q
 ∴ From equation (i),
 15q × q = 9375⇒ q2 = 9375 = 625 15 
 ⇒ q = √625 = 25
 ∴ p = 15y = 15 × 25 = 375
 ∴ p + q = 375 + 25 = 400
 Hence , The sum of the numbers is 400 .
 
	