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1) Whatis the number in the unit place of 1088 94 A) 2 B) 4 C) 3 D) 6
Answer & Explanation
Answer: 4 (Numbers with 8 in unit place have a pattern for their digit of their powers repeat every 4th power.
Therefore,the unit place of (8)94is same as 82 = 4.
)
2) 1100 *1100 - 1099 *1099 =?
A) 2199 B) 2129 C) 1299 D) 1229
Answer & Explanation
Answer: 2199 (Given expression can re-written as (1100 +1099) * (1100 - 1099) = 2199
)
3) If the Unit's digit in the product (343*499*25#*324) is 8 , the digit in the place of # is:
A) 2 B) 4 C) 6 D) 8
Answer & Explanation
Answer: 6 ("3*9*4=108. In order to obtain 8
at unit's place it must be multiplied
by a number whose unit's digit is 6..
so # must be replaced by 6."
)
4) what least value must be assigned to * so that the number 32865*6 is divisible by 11?
A) 2 B) 5 C) 3 D) 4
Answer & Explanation
Answer: 3 (To be divisible by 11 (sum of odd digits) - (sum of even digits) must be divisible by 11.
(3+8+5+6) - (2+6+*) = (22 -(8+*)) should be divisible by 11.Therefore * has to be 3.
)
5) A Worker is engaged for a 40 days on the condition that for every day he works, he will be paid $25 & for everyday he is absent, he will have to penalty of $10.If the worker receives $475 in all, how many days did he work?
A) 25 B) 22 C) 23 D) 24
Answer & Explanation
Answer: 25 (Look for the choices.If the worker works for 25 days, he will be paid ( 25 * 25 - 10*15) = $475
)
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