SSC CGL Mains LCM, HCF & Simplification Questions : 28th June

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Dear aspirants,

As you all know, the upcoming months are lined up with various important exams like SSC CGL Mains 2018, so we are here to help you with the subject that is common to all of the given exams. We are providing daily quantitative aptitude quizzes, practice which will help you to score good marks in this section. We aim to provide the best study material to our readers with exam level questions to help them get used to the recent pattern. Attempt this quiz and check your preparation.

Q2. (98764 + 89881 + 99763 + 66342) ÷ (1186 + ? + 1040 + 1870) = 55
(a) 2254
(b) 2354
(c) 2368
(d) 2404

Q3. If a, b, c, ……………, x, y, z are 26 natural numbers, then the value of (x – a) (x – b) (x – c) ………. (x – y) (x – z) is
यदि a, b, c, ……………, x, y, z, 26 प्राकृतिक संख्याएं है,तो (x – a) (x – b) (x – c) ………. (x – y) (x – z) का मान कितना होगा
(a) 0
(b) 1
(c) 13
(d) 26

S3. Ans.(a)
Sol. (x – a) (x – b) (x – c) … (x – y) (x – z)
= (x – a) (x – b) (x – c) … (x – x) (x – y) (x – z)
= {(x– a) (x – b) (x – c) … (x – w)} × 0 × [(x – y) (x – z)]
= 0

Q4. What mathematical operation should come at the place of ‘?’ in the equation:
समीकरण में ‘?’ के स्थान पर क्या गणितीय संक्रिया आनी चाहिए:
2 ? 6 – 12 ÷ 4 + 2 = 11.
(a) +
(b) –
(c) ×
(d) ÷

S4. Ans.(c)
Sol. Let 2 x 6 – 12 ÷ 4 + 2 = 11
Then, 2 x 6 – 3 + 2 = 11 ⇔ 2 x 6 = 11 + 3 – 2 = 12
So ‘x’ must be replaced by ‘x’.

Q9. Our bells ring at intervals of 30 min, 1 hour, 1 hour 30 minutes and 1 hour 45 min respectively. All the bells ring simultaneously at 12 : 00 noon. Then they will again ring simultaneously at:
चार घंटियाँ क्रमशः 30 मिनट, 1 घंटा, 1 घंटा 30 मिनट और 1 घंटा 45 मिनट के अंतराल पर बजती हैं। सभी घंटियाँ दोपहर 12: 00 बजे एक साथ बजती हैं। फिर किस समय वह एक साथ बजेंगी:
(a) 12 : 00 अध॔रात्रि
(b) 3 : 00 पुर्वाहन
(c) 6 : 00 पुर्वाहन
(d) 9 : 00 पुर्वाहन