Mathematical Operations(Reasoning Aptitude ) Questions and answers for exam Preparation

Reasoning Aptitude

MATHEMATICAL OPERATIONS MCQs

Total Questions : 233 | Page 17 of 24 pages

Question 161. In the questions given below, certain symbols are used with the following meanings:'A@B' means 'A is greater than B'.'A*B' means 'A is either greater than or equal to B'.'A#B' means 'A is equal to B'.'A$B' means 'A is either smaller than or equal to B'.'A+B' means 'A is smaller than B'.Statements: E * F, G $ H, H # E, G @ KConclusions: I. H @ K II. H * F

if only conclusion I is true.
if only conclusion II is true.
if either conclusion I or II is true.
if neither conclusion I nor II is true.
if both the conclusions I and II are true.

Discuss Question

Answer: Option E. -> if both the conclusions I and II are true.

E â‰¥ F -- (i); G â‰¤ H -- (ii); H = E -- (iii); G > K -- (iv)From (ii) and (iv), we get, H â‰¥ G > K => H > K. Hence, I is true.From (i) and (iii), we get, H = E â‰¥ F => H â‰¥ F.Hence, II is true.

Question 162. In the questions given below, certain symbols are used with the following meanings:'A@B' means 'A is greater than B'.'A*B' means 'A is either greater than or equal to B'.'A#B' means 'A is equal to B'.'A$B' means 'A is either smaller than or equal to B'.'A+B' means 'A is smaller than B'.Statements: P $ Q, N # M, M @ R, R * PConclusions: !. P + N II Q $ M

if only conclusion I is true.
if only conclusion II is true.
if either conclusion I or II is true.
if neither conclusion I nor II is true.
if both the conclusions I and II are true.

Discuss Question

Answer: Option A. -> if only conclusion I is true.

P â‰¤ Q -- (i); N = M -- (ii); M > R -- (iii); R â‰¥ P -- (iv)From (ii), (iii) and (iv), we get N = M > R â‰¥ P=> N > P or P < N. Hence, I is true.From (ii), (iv) and (i), we get, M > R â‰¥ P â‰¤ Q => No conclusion about the relationship between M and Q can be established.

Question 163. In the questions given below, certain symbols are used with the following meanings:'A@B' means 'A is greater than B'.'A*B' means 'A is either greater than or equal to B'.'A#B' means 'A is equal to B'.'A$B' means 'A is either smaller than or equal to B'.'A+B' means 'A is smaller than B'.Statements: T * U, U $ W, V @ L, W + VConclusions: I. V @ T II. L @ W

if only conclusion I is true.
if only conclusion II is true.
if either conclusion I or II is true.
if neither conclusion I nor II is true.
if both the conclusions I and II are true.

Discuss Question

Answer: Option D. -> if neither conclusion I nor II is true.

-NA-

Question 164. In the questions given below, certain symbols are used with the following meanings:'A@B' means 'A is greater than B'.'A*B' means 'A is either greater than or equal to B'.'A#B' means 'A is equal to B'.'A$B' means 'A is either smaller than or equal to B'.'A+B' means 'A is smaller than B'.Statements: D + T, E $ V, F * T, E @ DConclusions: I. D $ V II. D + F

if only conclusion I is true.
if only conclusion II is true.
if either conclusion I or II is true.
if neither conclusion I nor II is true.
if both the conclusions I and II are true.

Discuss Question

Answer: Option B. -> if only conclusion II is true.

-NA-

Question 165. A sum of Rs.1890 has to be used to give 9 prizes to the customers of a super market for their overall academic purchases. If each prize is Rs.30 less than its preceding price, what is the least value of the price ?

Discuss Question

Answer: Option A. -> 90

Question 166. The value of -4-(-10) is how much greater then the value of -10-(-4) ?

Discuss Question

Answer: Option C. -> 12

Question 167. In a group of buffaloes and ducks the number of legs are 24 more than twice the number of heads. What is the number of buffaloes in the group?

Discuss Question

Answer: Option C. -> 12

Question 168. If Ã— means Ã·, - means Ã—, Ã· means + and + means- than (3 - 15 Ã· 19) Ã— 8 + 6 = ?

8
4
2
-1

Discuss Question

Answer: Option C. -> 2

Question 169. The solution of 3(2u + v) = 7 uv and 3(u + 3v) = 11 uv is _____

u = 1, v = 0
u = 1, v = 3/2
u = 0, v = 3/4
u = 0, v = 1

Discuss Question

Answer: Option B. -> u = 1, v = 3/2

Question 170. In the following questions, symbols #, $, @, * and © are used with the following meaning as illustrated below:'P#Q' means 'P is not smaller than Q'.'P$Q' means 'P is neither smaller than nor greater than Q'.'P@Q' means 'P is neither greater than nor equal to Q'.'P*Q' means 'P is not greater than Q'.'P©Q' means 'P is neither smaller than nor equal to Q'.Statements: M © R, R @ K, K $ TConclusions: I. T © R II. T © M

if only conclusion I is true.
if only conclusion II is true.
if either conclusion I or II is true.
if neither conclusion I nor II is true.
if both the conclusions I and II are true.

Discuss Question

Answer: Option A. -> if only conclusion I is true.

M > R -- (i); R > K -- (ii); K = T -- (iii)combining (ii) and (iii), we get:K = T > R=> T > R (conclusion I).On the basis of the given information no specific relation can be obtained between T and M. Hence T > M (conclusion II) is not true.