Number System
- The face value of 8 in the numeral 458926 is ?
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The face value of 8 in 458926 is 8
Correct Option: B
The face value of 8 in 458926 is 8
- The local value of 7 in the numeral 5679032 is ?
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The local value of 7 in 5679032 is 70000.
Correct Option: B
The local value of 7 in 5679032 is 70000.
- ? x 48 = 173 x 240
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Let y x 48 = 173 x 240
Then y = (173 x 240) / 48Correct Option: C
Let y x 48 = 173 x 240
Then y = (173 x 240) / 48
=173 x 5
= 865 .
- 160 x 106 + 94 x 94 = ?
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106 x 106 + 94 x 94 =(106)2+(94)2
Correct Option: D
106 x 106 + 94 x 94 =(106)2 + (94)2
=1/2 [2(a2 + b2)]
=1/2 [(a+b)2 + (a-b)2]
=1/2 [(106 + 94)2 + (106 -94 )2]
=1/2 [ (200)2 + (12)2]
= 1/2 x [ 40000 + 144 ]
= 40144/2
= 20072 .
- 5358 x 51 = ?
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5358 x 51 = 5358 x (50 +1 )
Correct Option: B
5358 x 51 = 5358 x (50 +1 )
5358 x 50 + 5358 x 1
=267900 + 5358 = 273258