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What is the value of 0 - 1 + 2 - 3 + 4 - 5 + 6 - 7 ........... - 17 + 18 - 19 + 20?
- a)10
- b)15
- c)20
- d)25
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
What is the value of 0 - 1 + 2 - 3 + 4 - 5 + 6 - 7 ........... - 17 + ...
The given expression involves subtracting consecutive numbers in a pattern. Let's break down the expression step by step to find its value.
Step 1: 0 - 1 = -1
Step 2: -1 + 2 - 3 = -2
Step 3: -2 + 4 - 5 = -3
Step 4: -3 + 6 - 7 = -4
Step 5: -4 + 8 - 9 = -5
Step 6: -5 + 10 - 11 = -6
Step 7: -6 + 12 - 13 = -7
Step 8: -7 + 14 - 15 = -8
Step 9: -8 + 16 - 17 = -9
Step 10: -9 + 18 - 19 = -10
Step 11: -10 + 20 = 10
So, the final value of the given expression is 10.
Therefore, the correct answer is option A) 10.
Step 1: 0 - 1 = -1
Step 2: -1 + 2 - 3 = -2
Step 3: -2 + 4 - 5 = -3
Step 4: -3 + 6 - 7 = -4
Step 5: -4 + 8 - 9 = -5
Step 6: -5 + 10 - 11 = -6
Step 7: -6 + 12 - 13 = -7
Step 8: -7 + 14 - 15 = -8
Step 9: -8 + 16 - 17 = -9
Step 10: -9 + 18 - 19 = -10
Step 11: -10 + 20 = 10
So, the final value of the given expression is 10.
Therefore, the correct answer is option A) 10.
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Community Answer
What is the value of 0 - 1 + 2 - 3 + 4 - 5 + 6 - 7 ........... - 17 + ...
0 - 1 + 2 - 3 + 4 - 5 + 6 - 7...... - 17 + 18 - 19 + 20
= 0 + (-1 + 2) + (-3 + 4) + (-5 + 6) + ...... + (-17 + 18) + (-19 + 20)
= 0 + 1 + 1 + ...... + 1 + 1 = 10
= 0 + (-1 + 2) + (-3 + 4) + (-5 + 6) + ...... + (-17 + 18) + (-19 + 20)
= 0 + 1 + 1 + ...... + 1 + 1 = 10
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What is the value of 0 - 1 + 2 - 3 + 4 - 5 + 6 - 7 ........... - 17 + 18 - 19 + 20?a)10b)15c)20d)25Correct answer is option 'A'. Can you explain this answer?
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