1.  (112+5^4) =?


67000
70000
76500
77200


Answer

 Option

(112*5^4) =112* 10^4/2 = 112*10^4/2^4 = 1120000/16 = 70000.

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2.  217*217+ 183*183 = ?


79698
80578
80698
81268


Answer

 Option

(217)^ + (183)^2 = (200+17)^2 + (200 - 17)^2 = 2{(200)^2 + (17)^2} = 2{40000 + 289} = (2 * 40289) = 80578.

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3.  The difference between the local value and the face value of 7 in the numeral 32675149 is?


75142
64851
5149
69993


Answer

 Option

(Local value of 7) - (Face value of 7) =(70000 - 7) = 69993.

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4.  The difference between the place value and the face value of 6 in the numeral 856973 is?


973
6973
5994
None of these


Answer

 Option

(Place value of 6) - (Face value of 6) =(6000-6) = 5994.

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5.  106*106 - 94*94 =?


2400
2000
1904
1906


Answer

 Option

106*106 - 94*94 = (106)^2 - (94)^2 = (106 + 94) (106 - 94) {(a^2 - b^2) = (a+b) (a-b)} = (200*12) = 2400.

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