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Browse complete papersA can complete a piece of work in 21 days and B can complete it in 11 days. If they work on alternate days, starting with B on the first day, then in how many days will the work be completed?
14
15
\(15\frac{1}{3}\)
\(14\frac{1}{3}\)
Correct answer
14
The simplified value of \(\frac{(63^{10} \times 2^{13} \times 28^{19})}{(63^9 \times 2^{12} \times 28^{18})}\) is
3536
3527
3528
3530
Correct answer
3536
The 7-digit number 34A690B is divisible by 3. What is the maximum value of \( (A + B) \)?
18
16
17
14
Correct answer
18
Each of the digits in the number 2597836 is arranged in ascending order from left to right. What will be the sum of the digits that are second from the left and second from the right in the new number thus formed?
13
9
7
11
Correct answer
13
The sum of two positive numbers is 59 and their product is 564. The positive difference between them is:
35
34
55
47
Correct answer
35
A mobile phone is marked at ₹88,500. After applying successive discounts of 8%, 5% and 2%, what will be its final selling price (in ₹), rounded to the nearest integer?
74,098
75,802
76,781
72,345
Correct answer
74,098
The position(s) of how many letters will remain unchanged if each letter in the word JOURNAL is arranged in the English alphabetical order?
0
1
2
3
Correct answer
0
The simplified value of \( 81 - [54 - (56 \div 8 - (18 - 32 \div 4) \div 4)] \) is:
\(\frac{65}{2}\)
\(\frac{63}{2}\)
\(\frac{73}{2}\)
\(\frac{71}{2}\)
Correct answer
\(\frac{65}{2}\)
A and B can do a work in 2 days. If A alone can do it in 4 days, then in how many days can B alone do 70-times of the same work?
260
281
272
280
Correct answer
260
Sonali has a hemispherical pot having a radius of 21 cm. How much water (in litres) can be filled in it?
(Use \( \pi = \frac{22}{7} \))
19.404
9.702
28.702
38.808
Correct answer
19.404