Quantitative Aptitude – Mixed Questions Set 1

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Welcome to Online Quantitative Aptitude Section in AffairsCloud.com. Here we are creating question sample in Number Series and Quadratic Equations based on prelim pattern, which is common for SBI,IBPS, RBI,LIC, NICL and other  competitive exams.

1. X² – 26√3X + 504 = 0
   Y² – 34 √2Y + 570 =0
   A. X > Y
   B. X < Y
   C. X ≥ Y
   D. X ≤ Y
   E. X = Y or relationship cannot be established
   
   Answer & Explanation

   Answer – E. X = Y or relationship cannot be established
   Explanation :
   X = 12√3 = 20.784 , 14√3 = 24.248
   Y = 15√2 = 21.213 , 19√2 = 26.870
   
   
2. X² – √6 ( (√3 + √ 2 )x + 6) = 0
   Y² √2 ( 3Y + 6) +6√6 = 0
   A. X > Y
   B. X < Y
   C. X ≥ Y
   D. X ≤ Y
   E. X = Y or relationship cannot be established
   
   Answer & Explanation

   Answer – A. X > Y
   Explanation :
   X = 16√2, 17√2
   Y = 13√3, 12√3
   
   
3. X² – 33√2 X + 544 = 0
   Y² – 15√3 Y + 468 = 0
   A. X > Y
   B. X < Y
   C. X ≥ Y
   D. X ≤ Y
   E. X = Y or relationship cannot be established
   
   Answer & Explanation

   Answer – E. X = Y or relationship cannot be established
   Explanation :
   X = 3√2, 2√3
   Y = 3√2, 2√3
   
   
4. X² – 30X + 224 = 0
   Y² – 26Y + 168 = 0
   A. X > Y
   B. X < Y
   C. X ≥ Y
   D. X ≤ Y
   E. X = Y or relationship cannot be established
   
   Answer & Explanation

   Answer – C. X ≥ Y
   Explanation :
   X² – 30X + 224 = 0
   X = 14 16
   Y² – 26Y + 168 = 0
   Y = 12 14
   
   
5. X² – 27√3X + 546 = 0
   Y² – 31√3Y + 720 = 0
   A. X > Y
   B. X < Y
   C. X ≥ Y
   D. X ≤ Y
   E. X = Y or relationship cannot be established
   
   Answer & Explanation

   Answer – B. X < Y
   Explanation :
   X = 14√3 , 13√3
   Y = 15√3, 16√3
   
   
6. 5, 15, 120, 7620, ?
   A. 29306010
   B. 39210600
   C. 67230120
   D. 30092100
   E. None
   
   Answer & Explanation

   Answer – A. 29306010
   Explanation :
   5*6-(5*6/2)=15
   15*16 –( 15*16/2)= 120
   120 * 121 –(120*121/2) = 7260
   7260* 7261-(7260*7261/2) = 29306010
   
   
7. 7, 14, 42, 147, 469, ?
   A. 2240
   B. 2800
   C. 2380
   D. 2100
   E. None
   
   Answer & Explanation

   Answer – C. 2380
   Explanation :
   7*1 + 7*1 =14
   14*2 + 7*2 = 42
   42*3 + 7*3 = 147
   147*4 + 7*4 = 469
   469*5 + 7*5 = 2380
   
   
8. 9, 9.5,19.5, 59, ?
   A. 225
   B. 225.5
   C. 236
   D. 236.5
   E. None
   
   Answer & Explanation

   Answer – D. 236.5
   Explanation :
   9*1 + 0.5 = 9.5
   9.5 *2 + 0.5 = 19.5
   19.5 * 3 + 0.5 = 59
   59*4 + 0.5 = 236.5
   
   
9. 1, 0, 2, 3, ?, 35
   A. 16
   B. 18
   C. 17
   D. 19
   E. None
   
   Answer & Explanation

   Answer – A. 16
   Explanation :
   1*1 – 1 = 0
   0 *2 + 2 =3
   2*3 – 3 =3
   3*4 + 4 = 16
   16*5 – 5 = 75
   
   
10. 2, 10, 20, 100, 200,1000, ?
    A. 1000
    B. 2000
    C. 2500
    D. 10000
    E. None
    
    Answer & Explanation

    Answer – B. 2000
    Explanation :
    2*5 = 10
    10*2 =20
    20*5 = 100
    100*2 =200
    200*5 = 1000
    1000*2 = 2000