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Direction: In each of the following questions, two rows of numbers are given. The resultant number in each row is to be worked out separately based on the following rules and the question below the rows of numbers are to be answered. The operations of numbers progress from left to right.
Rules:
i) If a number which is divisible by 3 is followed by an odd number then they are to be multiplied.
ii) If a number which is divisible by 3 is followed by an even number then they are to be added.
iii) If a number which is not divisible by 3 is followed by an odd number then smaller number is to be subtracted from larger number.
iv) If a number which is not divisible by 3 is followed by an even number then they are to be added.
12 3 2
18 6 1
If resultants of the given sets are added, which digit is at the unit place of the number so obtained?
2
8
4
7
5
Correct Option 1: 2
Given Rules: Let’s restate them clearly:
If divisible by 3, and followed by odd → Multiply
If divisible by 3, and followed by even → Add
If NOT divisible by 3, and followed by odd → Subtract (smaller from larger)
If NOT divisible by 3, and followed by even → Add
Operations are performed left to right in sequence.
First Row: 12 3 2 Step 1: 12 and 3 12 is divisible by 3
3 is odd → Multiply: 12 × 3 = 36
Step 2: 36 and 2 36 is divisible by 3
2 is even → Add: 36 + 2 = 38
Result of Row 1: 38
Second Row: 18 6 1 Step 1: 18 and 6 18 is divisible by 3
6 is even → Add: 18 + 6 = 24
Step 2: 24 and 1 24 is divisible by 3
1 is odd → Multiply: 24 × 1 = 24
Result of Row 2: 24
Add the results: 38 + 24 = 62
Unit digit = 2
Final Answer: 1. 2
By: Parvesh Mehta ProfileResourcesReport error
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