Question:

There are two similar figures below with some numbers. The left one is complete whereas one number is missing in the right one. Find a suitable number to fill in place of the question mark.

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Check if the bottom number in the complete circle equals the sum of the top, left and right numbers.
Updated On: Jul 15, 2026
  • 280
  • 303
  • 362
  • 382
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The Correct Option is A

Solution and Explanation

Step 1: Identify the numbers in the complete (left) circle.
The left circle has top = 102, left = 09, right = 90, and bottom = 201.
Step 2: Look for a relationship between the four numbers.
Check whether the bottom number equals the sum of the other three numbers.
Top + Left + Right = 102 + 09 + 90 = 201, which is exactly equal to the bottom number, 201.
Step 3: Confirm the rule.
The rule connecting the four numbers in each circle is: Bottom = Top + Left + Right.
Step 4: Apply the rule to the incomplete (right) circle.
The right circle has top = 203, left = 07, right = 70, and the bottom value is unknown.
Using the rule: Bottom = 203 + 07 + 70 = 280.
Step 5: Match with the given options.
The value 280 corresponds to option (1). The other options, 303, 362 and 382, do not satisfy the sum rule found from the complete circle, so they are incorrect.
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