IBPS CWE-QUANTITATIVE APTITUDE MODEL PAPER-1

Q. 1-15. What should come in place of the question mark (?) in the following questions?

1. [ ( 24)2 + (36)2] divided by 25 = ?
(1) 70.75 (2) 74.88 (3) 78.68 (4) 73.28
(5) None of these

2. (6214 + 3689 + 1476) – (5213 + 1365 + 2038) =?
(1) 2843 (2) 2753 (3) 2763 (4) 2853
(5) None of these

3. 1/13 X 3237 + 3/14 X 5362 = ?
(1) 1346 (2) 1368 (3) 1355 (4) 1398
(5) None of these

4. (48)2 divided by 12 + sq.root of ? = 248
(1) 3035 (2) 3025 (3) 3249 (4) 3136
(5) None of these

5. 39% of 760 – 29% of 550 = ?
(1) 144.3 (2) 156.5
(3) 136.9 (4) 130.6
(5) None of these

6. sq.root of 3249 + (75)2 + sq.root of ? = 5745
(1) 3721 (2) 4096 (3) 3481 (4) 3969
(5) None of these

7. What percent of 20 is 16?
1) 3.2% (2) 16% (3) 36% (4) 80%
(5) None of these

8. (65.5 × 15.5) × 100 = ?
(1) 108125 (2) 102615 (3) 101525 (4) 105125
(5) None of these

9. 410.25 + 369.46 ÷ 0.052 = ?
(1) 7515.25 (2) 7818.18 (3) 7616.35 (4) 7525.05
(5) None of these

10. Organisers of a trade fair projected an increase of 20% in the number of visitors over the previous year, but the number of visitors actually increased by 50%. By what percentage was the actual number of visitors greater than the projected number of visitors?
(1) 20% (2) 30% (3) 25% (4) 45%
(5) None of these

Continue reading...

Quantitative Aptitude : Important Formulae for CWE

ALGEBRA :

1.      Sum of first n natural numbers = n(n+1)/2

2.      Sum of the squares of first n natural numbers = n(n+1)(2n+1)/6

3.      Sum of the cubes of first n natural numbers = [n(n+1)/2]²

4.      Sum of first n natural odd numbers = n²

5.      Average = (Sum of items)/Number of items

Arithmetic Progression (A.P.):

An A.P. is of the form a, a+d, a+2d, a+3d, ...

where a is called the 'first term' and d is called the 'common difference'

1.      nth term of an A.P. tn = a + (n-1)d

2.      Sum of the first n terms of an A.P. Sn = n/2[2a+(n-1)d] or Sn = n/2(first term + last term)

Geometrical Progression (G.P.):

A G.P. is of the form a, ar, ar², ar³, ...

where a is called the 'first term' and r is called the 'common ratio'.

1.      nth term of a G.P. t_n = ar^n-1

2.      Sum of the first n terms in a G.P. Sn = a|1-rⁿ|/|1-r|

Permutations and Combinations :

1.      nPr = n!/(n-r)!

2.      nPn = n!

3.      nP1 = n

1.      nCr = n!/(r! (n-r)!)

2.      nC1 = n

3.      nC0 = 1 = nCn

4.      nCr = nCn-r

5.      nCr = nPr/r!

Number of diagonals in a geometric figure of n sides = nC2-n

Continue reading...