Page 91 - Bangladesh_classwiz_BOOK2018_rev_Neat

Abykxjbx-7

2 3
3
5 2 2 5 2 −5 7 ×7 −3 3 √7 . √7
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1| gvb wbYq Ki- (K) (L) ( ) × ( ) (M) (N)
5 3 3 5 3×3 −4 √7
2| K¨vjKz‡jU‡ii mvnv‡h¨ †ei Ki-
4

5 × 8 × 16 3.2 −4.2 −2 3 . 1
(K) (L) (M) 7 4 7 2

5
2 ×125 2 −2 −1
3
3 1 2 4
(N) (16) 4 ÷ (16) 2 (O) (10 3)
3| r evUb e¨envi K‡i mgvavb †ei Ki-

(K) 4 +1 = 32 (L) 4 = 8 (M) 2 2 +1 = 128 (N) 2 + 2 1− = 3
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4| K¨vjKz‡jU‡ii mvnv‡h¨ gvb wbYq Ki-
(K) log 10 100

(L) 5 log 10 5 − log 10 25

(M) log 10 5 − log 10 3 − 2 log 10 7

(N) log 10 10 − 2 log 10 25 + 30 log 10 81
9
24
80
5| Gi gvb wbY©q Ki-
(K) log 10 = −2

(L) log 324 = 4

6| K¨vjKz‡jUi e¨envi K‡i ˆeÁvwbK c×wZ‡Z cÖKvk Ki-

(K) 5570 (L) 45.70 (M) 0.4305 (N) 0.000435

(O) 0.00000014 (P) 37500000

7| mvaviY `kwgK iƒ‡c cÖKvk Ki-

5
4
−5
(K) 10 (L) 10 (M) 2.53 × 10
−3
−5
(N) 9.813 × 10 (O) 3.12 × 10
8| 0.00836 Gi j‡Mi c~Y©K I AskK KZ?

9| K¨vjKz‡jUi e¨envi K‡i log 43.517 Gi c~Y©K I AskK †ei Ki|

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