Discussion
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- Question
- Which of the following sets of operation with the usual notations replacing the starts in the order given makes the statements valid?
? 100 * ? 16 * ? 225 * ? 1
Options- A. x, =, +
- B. +, =, -
- C. +, =, x
- D. -, x, =
- Correct Answer
- +, =, -
Explanation?100 + ?16
= ?225 -?1
10 + 4 = 15 - 1
? 14 = 14 - 1. Statements:
F ? X < A, R < X ? F
Conclusions:
I. F ? E II. R < F
Options- A. If only conclusion I follows
- B. If only conclusion I follows
- C. If either conclusion I or II follows
- D. If neither conclusion I nor II follows Discuss
- 2. Statements:
V ? K > M = N, M > S, T< K
Conclusions:
I. T < N II. V = S
Options- A. If only conclusion I follows
- B. If only conclusion II follows
- C. If either conclusion I or II follows
- D. If neither conclusion I nor II follows Discuss
- 3. Statements:
Y < J = P ? R > I
Conclusions:
I. J > I II. Y < R
Options- A. If only conclusion I follows
- B. If only conclusion II follows
- C. If either conclusion I or II follows
- D. If neither conclusion I nor II follows Discuss
- 4. Statements:
L > U ? K, Z < U < R
Conclusions:
I. L > Z II. K < R
Options- A. If only conclusion I follows
- B. If only conclusion II follows
- C. If either conclusion I or II follows
- D. If neither conclusion I nor II follows Discuss
- 5. Statements:
A ? B = C, B < D ? E
Conclusions:
I. D > A II. E > C
Options- A. If only conclusion I follows
- B. If only conclusion II follows
- C. If either conclusion I or II follows
- D. If neither conclusion I nor II follows Discuss
- 6. Select the correct combination of mathematical signs to replace '*' signs and to balance the given equation.
24 * 34 * 2 * 5 * 12
Options- A. + ÷ x =
- B. = ÷ + -
- C. = ÷ - +
- D. + ÷ = x Discuss
- 7. If A means '-' , B means '+', C means 'x', and D means '÷' then 32 D 4 B 7 C 2 A 6
Options- A. 18
- B. 24
- C. 36
- D. 16 Discuss
- 8. If K denotes 'X', B denotes '÷', 'T' denotes '-' and 'M' denotes '+', then 40 B 8 T 6 M 3 K 4 =?
Options- A. 19
- B. 11
- C. -31
- D. 23 Discuss
- 9. 16 (27) 43, 29 (?) 56, 36 (12) 48
Options- A. 23
- B. 33
- C. 27
- D. 37 Discuss
- 10. 7 4 8 2 = 24
Options- A. -, x and x
- B. -, x and ÷
- C. x, - and ÷
- D. x, ÷ and - Discuss
Mathematical Operations problems
Search Results
Correct Answer: If only conclusion I follows
Explanation:
Split them as F ? X ...(i) X < A ...(ii)
R < X ...(ii) and X ? E ...(iv)
Combining (i) and (iv) we get
F ? X ? F or F ? E.
Hence I follow.
From (i) and (iii) R and F can't be compared. Hence II does not follow.
Correct Answer: If neither conclusion I nor II follows
Explanation:
V ? K > M = N > S
K > T
I. T < N is not true, II. V = S is true.
Correct Answer: If only conclusion I follows
Explanation:
Y < J = P ? R > I
I. J > I is true, II. Y < R is not true.
Correct Answer:
Explanation:
Split them as L > U ...(i)
Combining (i) and (ii),
We get L > U > Z or L > Z
Hence I follows.
Combining (ii) and (iv) we get K ? U < R or K < R Hence II follows.
Correct Answer: If only conclusion II follows
Explanation:
A ? B = C < D ? E
I. D > A is not true, II. E > C is true.
Correct Answer: = ÷ - +
Explanation:
From option (c),
24 = 34 ÷ 2 - 5 + 12
? 24 = 17 - 5 + 12
? 24 = 29 - 5
? 24 = 24
Correct Answer: 16
Explanation:
32 D 4 B 7 C 2 A 6
= 32 ÷ 4 + 7 x 2 - 6 = 8 + 7 x 2 - 6
= 8 + 14 - 6 = 22 - 6 = 16
Correct Answer: 11
Explanation:
? 40 B 8 T 6 M 3 K 4 = ?
? 40 ÷ 8 - 6 + 3 x 4 = ?
? 5 - 6 + 12 = ?
? 17 - 6 = ?
? ? = 11
Correct Answer: 27
Explanation:
Here, Right number - Left number = Middle number
As, 43 - 16 = 27, 48 - 36 = 12
similarly, 56 - 29 = 27
? ? = 27
Correct Answer: x, - and ÷
Explanation:
Let us check all the options one-by-one.
From option (a),
7 - 4 x 8 x 2 = 24 (using VBODMAS rule)
? 7 - 64 = 24 ? -57 = 24
? LHS ? RHS ? RHS
So, option (a) is incorrect.
From option (b),
7 - 4 x 8 ÷ 2 = 24 (using VBODMAS rule)
? 7 - 4 x 8 ÷ 2 = 24 (using VBODMAS rule)
? 7 - 4 x 4 = 24 ? 7 - 16 = 24
? -9 = 24 ? LHS ? RHS
So, option (b) is incorrect .
From option (c),
7 x 4 - 8 ÷ 2 = 24 (using VBODMAS rule)
? 7 x 4 - 4 = 24 ? 28 - 4 = 24
? 24 = 24 ? LHS = RHS
So, option (c) is correct and hence, there is no need to check option (d).
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