If 7th Jan is Thursday, what day will it be on 30th Jan?
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If 7th Jan is Thursday, what day will it be on 30th Jan?
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Answer: C. Saturday
From 7th January to 30th January is 23 days (30 - 7 = 23). Since days repeat every 7 days, we find 23 mod 7 = 2. Starting from Thursday and adding 2 days gives us Saturday.
Step-by-step Derivation:
Step 1: Calculate the number of days between 7th Jan and 30th Jan.
Days = 30 - 7 = 23 days
Step 2: Find the remainder when 23 is divided by 7 (since the week repeats every 7 days).
23 ÷ 7 = 3 remainder 2
23 mod 7 = 2
Step 3: Starting from Thursday (7th Jan), add 2 days:
Thursday + 1 day = Friday
Friday + 1 day = Saturday
Answer: 30th January will be Saturday.