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Directions:(1-5) What value will come in place of question mark (?) in the following questions?
1. √196 + √121 + √729 = ?
2. 27 x 22 – 4 = ? x 10
3. (34)2 + (36)2 – (31)2 = ?
4. (?)2 + 23 = 282 – 202
5. (?)2 + 83 = 352 – 37
6. 9 x 46 – 37 x 34 = ?
7. 1/4 x 5620 – 2/5 x ? = 373
8. 36% of 365 + ?% of 56.2 = 156.69
9. √2704 ÷ ∛2197 + ∛2744 x ∜6561 = ?
10. 58% of √3136 x 12 = ? + 25% of 125 + 30% of 240
Check your Answers below:
Directions:(1-5) What value will come in place of question mark (?) in the following questions?
1. Question
√196 + √121 + √729 = ?
? = √196 + √121 + √729
= 14 + 11 + 27
= 52
2. Question
27 x 22 – 4 = ? x 10
? = (27 x 22 – 4)/10
= (594 – 4)/10
= 590/10 = 59
3. Question
(34)2 + (36)2 – (31)2 = ?
? = 342 + 362 – 312
= 1156 + 1296 – 961
= 1491
4. Question
(?)2 + 23 = 282 – 202
(?)2 = 282 – 202 – 23
= 784 – 400 – 23
= 361
? = 19
5. Question
(?)2 + 83 = 352 – 37
(?)2 = 352 – 37 – 83
= 1225 – 37 – 512 = 676
So, ? = 26
6. Question
9 x 46 – 37 x 34 = ?
? = 9 x 46 – 37 x 34
= 414 – 1258
= -844
7. Question
5620/4 – 2 x ?/5 = 373
1405 – 373 = 2 x ?/5
Required value = 1032 x 5 /2 = 2580
8. Question
36% of 365 + ?% of 56.2 = 156.69
36/100 x 365 + ?/100 x 56.2 = 156.69
=> 13140 + ? x 56.2 = 15669
=> ? x 56.2 = 15669-13140 = 2529
? = 2529/56.2 = 45
9. Question
√2704 ÷ ∛2197 + ∛2744 x ∜6561 = ?
52/13 + 14×9 = 4 + 126 = 130
10. Question
58% of √3136 x 12 = ? + 25% of 125 + 30% of 240
Required value = 58% of 56 x 12 – 25% of 125 + 30% of 240
= 0.58 x 56 x 12 – 0.25 x 125 – 0.3 x 240
= 286.51
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