Tiêu đề 01. REAL NUMBERS.pdf ✅

(3.) 1 4 (4.) 1 3 #QID# 45660 (6.) If d is the HCF of 56 and 72, the values of x, y satisfying d = 56x + 72y: (1.) x = -3, y = 4 (2.) x = 4, y = -3 (3.) x = 3, y = -4 (4.) x = -4, y = 3 #QID# 45661 (7.) 2.35 is: (1.) An integer. (2.) A rational number. (3.) An irrational number. (4.) None of these. #QID# 45662 (8.) The total number of factors of a prime number is: (1.) 1 (2.) 0 (3.) 2 (4.) 3 #QID# 45663 (9.) Every prime number has exactly ________ factors. (1.) more than 4 (2.) 3 (3.) 4 (4.) 2 #QID# 45664 (10.) The exponent of 3 in the prime factorization of 864 is: (1.) 2 (2.) 3 (3.) 4 (4.) 8 #QID# 45666 (11.) Two tankers contain 850 litres and 680 litres of petrol. The maximum capacity of a container which can measure the petrol of each tanker in exact number of times is: (1.) 200 litres (2.) 180 litres (3.) 170 litres (4.) 190 litres #QID# 45667 (12.) Which of the following numbers have the non-terminating repeating decimal expansion? (1.) 77 210 (2.) 6 15
(3.) 21 280 (4.) 2 3 117 6 5  #QID# 45668 (13.) The smallest number by which 27 should be multiplied so as to get a rational number is: (1.) 27 (2.) 3 3 (3.) 3 (4.) 3 #QID# 45669 (14.) If p and q are co-prime numbers, then p 2 and q 2 are: (1.) Co-prime. (2.) Not co-prime. (3.) Even. (4.) Odd. #QID# 45670 (15.) Directions: In the following questions, the Assertions (A) and Reason(s) (R) have been put forward. Read both the statements carefully and choose the correct alternative from the following: Assertion: HCF of consugative even no. is always 3. Reason: HCF of 22 and 24 is 3. (1.) Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A). (2.) Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A). (3.) Assertion (A) is true but reason (R) is false. (4.) Assertion (A) is false but reason (R) is true. #QID# 45671 (16.) Which of the following is a pair of co-primes? (1.) (14, 35) (2.) (18, 25) (3.) (31, 93) (4.) (32, 62) #QID# 45672 (17.) The largest number which divides 33 and 75, leaving remainders 1 and 3 respectively is: (1.) 8 (2.) 12 (3.) 16 (4.) 6 #QID# 45673 (18.) If the sum of LCM and HCF of two numbers is 1260 and their LCM is 900 more than their HCF, then the product of two numbers is: (1.) 203400 (2.) 194400 (3.) 198400 (4.) 205400
#QID# 45677 (19.) Which of the following is an irrational number? (1.) 22 7 (2.) 3.1416 (3.) 3.1416 (4.) 3.141141114... #QID# 45678 (20.) If the LCM of two numbers is 45 times their HCF and the sum of LCM and HCF is 1150, then HCF = (1.) 25 (2.) 1150 (3.) 50 (4.) 45 WORKSHEETS 2 #QID# 45679 (21.) Any ________ is of the form 4q + 1 or 4q + 3 for some integer q. (1.) prime number (2.) composite number (3.) positive even integer (4.) positive odd integer #QID# 45680 (22.) The LCM of two consecutive numbers is: (1.) Their difference (2.) 0 (3.) Their sum (4.) Their product #QID# 45681 (23.) The decimal expansion of the rational number 14587 1250 will terminate after: (1.) One decimal place. (2.) Two decimal place. (3.) Three decimal place. (4.) Four decimal place. #QID# 45683 (24.) The HCF of 135 and 225 is: (1.) 15 (2.) 75 (3.) 45 (4.) 5 #QID# 45684 (25.) Choose the correct answer from the given four options in the following questions: