Home›UPSC Prelims›Paper 2: General Studies II (CSAT)›Civil Services Aptitude Test (CSAT)›Basic Numeracy & Data Interpretation›If ABC and DEF are both 3-digit numbers such that A, B, C, D, E and F

If ABC and DEF are both 3-digit numbers such that A, B, C, D, E and F are distinct non-zero digits such that ABC + DEF = 1111, then what is the value of A + B + C + D + E + F?

20233Mprelimsupscyear-2023p2quantitative-aptitudequantitative-abilitylinear-equation
A.28
B.29
C.30
D.31Correct
Explanation & Solution

The correct answer is (D) 31.

Explanation:

Since both numbers sum to 1111, and all digits are distinct and non-zero, the sum of all digits must be 31

हिंदी में प्रश्न एवं आदर्श उत्तर

यदि ABC और DEF दोनों ही 3-अंकों की संख्याएँ हैं, इस प्रकार कि A, B, C, D, E और F भिन्न शून्यतर अंक हैं, इस प्रकार कि ABC + DEF = 1111, तो A + B + C + D + E + F का मान क्या है ?

A.28
B.29
C.30
D.31सही

सही उत्तर (D) 31 है।

व्याख्या:

Since both numbers sum to 1111, and all digits are distinct and non-zero, the sum of all digits must be 31

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