SSC CGL 2025 Tier-I · 19 September 2025, Shift 2 · General Intelligence and Reasoning · Question 24 of 100

We transcribed this text from the pictures on a candidate's response sheet for this shift; the answer is the key SSC colour-marked on that sheet. Solution last reviewed 13 September 2026.

Where this paper and its answers come from

SSC does not publish CGL question papers or a public answer key. From 2025 the candidate response sheet prints every question and option as a picture, so the text here is transcribed from those pictures for this shift and checked against them independently; where the layout carries meaning, the picture is shown as well. Each answer is the key SSC colour-marked on that sheet. SSC released a tentative key for challenge and later its final one, both only to candidates behind a login, and the sheet does not say which of the two it carries. The solutions are written by UnlockIAS.

If the 7th day of a month is three days earlier than Friday, What day will it be on the 20th day of the month?

(a)Monday
(b)Tuesday
(c)Sunday
(d)Wednesday

Answer

Why

Correct — A.
Rule: a weekday repeats every 7 days, so only the remainder after dividing by 7 moves the day.

7th = three days before Friday = Tuesday
Gap to the 20th: 20 − 7 = 13 days
13 ÷ 7 leaves remainder 6
Tuesday + 6 days = Monday → option (a).

Why the others are wrong

(b)
Tuesday — Tuesday falls on the 7th, 14th and 21st. The 20th is the day before the 21st, so it is Monday.
(c)
Sunday — Sunday is the 19th, Tuesday + 5. The 7th to the 20th is 13 days, remainder 6, not 5.
(d)
Wednesday — Wednesday is the 15th and the 22nd. From Tuesday the 7th it needs a remainder of 1, and 13 days leave 6.

Concept

Day-of-the-week items reduce to one sum: known day + (gap in days, mod 7). Fix the anchor date first, count the gap, and throw away whole weeks.

A check by weeks: Tuesday on the 7th means Tuesday on the 14th and 21st, so the 20th is the day before, Monday.

Key facts

Three days before Friday is Tuesday: Thursday, Wednesday, Tuesday.
Dates 7 days apart share a weekday: the 7th, 14th, 21st and 28th.
Day shift = (later date − earlier date) mod 7, here 13 mod 7 = 6.

Study next

Odd days and the weekday of a given dateLeap-year rules for century yearsYears whose calendars repeat

Common traps

Counting Friday as one of the three days, which puts the 7th on Wednesday and the 20th on Tuesday
Counting both ends, 20 − 7 + 1 = 14 days, which also lands on Tuesday

23 Sep 2025, 09:00, Reasoning Q.3 uses the same days-before and days-after counting on dates: Darjeeling on 2nd March, Siliguri 3 days later, Kalimpong 1 day before Siliguri, so 4th March (keyed b).

Related PYQs

No directly related past PYQ was found.

Topic: Problem Solving — all 123 SSC CGL questions on it, every solved shift.