This question tests your understanding of arithmetic operations and symbol substitution.
Step 1: Replace the symbols
The given equation is: 8x7-8+40÷2 = ?
Replacing the symbols according to the given conditions (x means +, + means ÷, - means x, ÷ means -):
The equation becomes: 8 + 7 x 8 ÷ 40 - 2 = ?
Step 2: Apply the order of operations (BODMAS/PEMDAS)
Following the order of operations (Brackets, Orders, Division and Multiplication, Addition and Subtraction), we perform the calculations:
- Multiplication and Division (from left to right): 7 x 8 = 56; 56 ÷ 40 = 56/40 = 7/5
- Addition and Subtraction (from left to right): 8 + 7/5 - 2
- To add and subtract fractions, we find a common denominator, which is 5 in this case:
- (40 + 7 - 10)/5 = 37/5
Step 3: Determine the answer
Therefore, the final answer is 37/5.
Step 4: Eliminate incorrect options
- Option 1 (1): Incorrect because it doesn't follow the order of operations and symbol substitutions correctly.
- Option 2 (37/5): Correct as shown in the step-by-step solution above.
- Option 3 (8 3/5): Incorrect. This is a miscalculation of 37/5. (37/5 = 7.4 or 7 2/5)
- Option 4 (44): Incorrect. This is a completely wrong calculation resulting from not following the order of operations and ignoring symbol changes.
Final Answer: 37/5
Similar Questions
Study the given pattern carefully and select the number that can replace the question mark (?) in it.
(4, 2, 18)
(1, 7, 24)
(5, 4, ?)
(NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g. 13 - Operations on 13 such as adding/subtracting/multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed)
Study the given pattern carefully and select the number that can replace the question mark (?) in it.
(6, 1, 18)
(5, 4, 60)
(6, 2, ?)
(NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g. 13 – Operations on 13 such as adding/subtracting/multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed)
Study the given pattern carefully and select the number that can replace the question mark (?) in it.
(7, 5, 10)
(2, 1, 5)
(16, 6, ?)
(NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g. 13 - Operations on 13 such as adding/subtracting/multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed)
Study the given matrix carefully and select the number from among the given options that can replace the question mark(?) in it
7 9 5 3 8 ? 28 81 50 Study the given pattern carefully and select the number from among the given options that can replace the question mark (?) in it.
11 15 9 14 16 ? 75 31 88 Study the given pattern carefully and select the number that can replace the question mark (?) in it.
7 35 13 9 24 14 13 120 ? Study the given pattern carefully and select the number that can replace the question mark (?) in it.
3 13 4 6 67 31 5 ? 20 Study the given matrix carefully and select the number from among the given options that can replace the question mark (?) in it.
6 18 42 5 15 ? 7 36 61 Study the given pattern carefully and select the number that can replace the question mark (?) in it.
3 6 8 5 32 60 18 ? 238 Select the missing number from the given options.
36
52
86
28
40
12
32
46
?
Important Questions from Missing Number in Matrix
Select the missing number from the given responses:
1
216
343
8
125
512
27
64
?
35
401
1575
Following is a matrix of certain entries. The entries follow a certain trend row-wise. Choose the missing entry (?) accordingly.
7B 10A 3C 3C 9B 6A 10A 13C ? Study the given pattern carefully and select the number that can replace the question mark (?) in it.
116 160 ? 3 8 13 7 4 2 Find the missing number from the given responses in the following question.
9 6 8 5 8 4 7 4 ? 11 2 7 In the following question, from the given alternatives, select the number that comes in place of the question mark (?).
16
8
13
17
12
23
21
15
19
162
105
?
