$ EXERCISE PA
LEVEL-O
15
1. 1+2+3+...+20 ?
(a) 200 (b) 210 (c) 190 (d) 220
2. 40 +41 +42 + ........ + 60 = ?
(a) 1000 (b) 900 (c) 950 (d) 1050
3. Find the least value of 'k so that 2718k6 is divisible
by 3
(a) (b) 3 (c) 6 (d) 4.
4. Which of the following number is divisible by 15
(a) 3975 (b) 3575 (c) 3970 (d) 3580
5. Find the units digit of 60 + 50
(a) 0 (6) 1 (c) 3 (d) 5
6. Which of the following number is prime
(a) 441 (b) 223 (c) 357 (d) 153
LEVEL 1
16.
17.
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