18. Statement A: If A : B = 5 : 7 and B : C = 6 : 11 then A : B : C is 30 : 42 : 77Statement B: If a and b are coprimes then their LCM is aba) Both A and B are truec) A is false and B is trueb) A is true and B is falsed) Both A and B are false

16. Statement A: 4 1/2 % of 3m is 1.35cmStatement B: The simplest ratio of Rs.75 to 50 paise is 1: 150a) Both A and B are truec) A is false and B is trueb) A is true and B is falsed) Both A and B are false

25. Statement A: The ratios 15cm to 2m and 10sec to 3 minutes form a proportionStatement B: If the cost of 6 cans of juice is Rs.210 then the cost of 4 cans of juice isRs. 140a) Both A and B are truec) A is false and B is trueb) A is true and B is falsed) Both A and B are false

20. Statement A: The expanded form of 2.06 is (2 xx10)+( 6×1/100)Statement B: If the prime numbers from 23 to 47 are listed as 23, x, 31, 37, 41, y, 47 thenx +y is 72a) Both A and B are truec) A is false and B is trueb) A is true and B is falsed) Both A and B are false

If a : b=5:7\ a n d\ b : c=6: 11 , then a : b : c= (a) 35 : 49 : 66 (b) 30 : 42 : 77 (c) 30 : 42 : 55 (d) None of these

True or False statements : if A and B are square matrices of the same order then A - B = B - A.

Let a,b,c and d represent simple statements. Assume that a ^^ d is true, b ^^ c is false, and ~c is false. What is truth value of c ?

Let a,b,c and d represent simple statements. Assume that a ^^ d is true, b ^^ c is false, and ~c is false. What is the truth value of b ?

True or False statements : If A,B,C are three matrices such that both AB and AC are defined and are equal, then it implies that B and C are equal matrices.

Let a,b,c and d represent simple statements. Assume that a ^^ d is true, b ^^ c is false, and ~c is false. What is the truth value of a ?