Question

Show that (P-5/6ρ 1/2 E 1/3) is of the dimensions of time. Here P is the pressure, ρ is the density and E is the energy of a bubble)

Answer 1

Answer:

2. Check whether the numbers are divisibility by 4:

(i) 23408

(ii) 100246

(iii) 34972

(iv) 150126

(v) 58724

(vi) 19000

(vii) 43938

(viii) 846336

3. In each of the following numbers without doing actual division, determine whether the first number is divisible by the second number:

(i) 3409122; 6

(ii) 17218; 6

(iii) 11309634; 8

(iv) 515712; 8

(v) 3501804; 4

4. 6 is a factor of 12066 and 49320. Is 6 a factor of 49320 + 12066 and 49320 - 12066?

5. Is 9 a factor of the following?

(i) 394683

(ii) 1872546

(iii) 5172354

6. Fill in the smallest digit to make the number divisible by:

(i) by 5 : 7164__, 32197__

(ii) by 3 : 1__43, 47__05, __316

(iii) by 6 : __428, 9__52, 721__

(iv) by 4 : 2462__, 91__ __, 670__

(v) by 8 : 1232__, 59__16, 4642__

7. Check using divisibility rules and fill in the boxes using “Yes” or “No”.

Divisibility Rules (Tests)

17Save

8. Which of the two nearest numbers to 19506 are divisible by 9?

Answers for the worksheet on divisibility rules are given below.

Answers:

1. (ii) 19400

(iv) 125370

(v) 3000000

2. (i) 23408

(iii) 34972

(v) 58724

(vi) 19000

(viii) 846336

3. (i) Yes

(ii) No

(iii) No

(iv) Yes

(v) Yes

4. Yes

5. (iii) 5172354

6. (i) 0, 0

(ii) 1, 2, 2

(iii) 1, 2, 2

(iv) 0, 00, 0

(v) 0, 0, 4

7. (i) Yes, No, Yes, No, No, Yes, No, No

(ii) Yes, Yes, Yes, No, Yes, No, No, Yes

(iii) Yes, No, Yes, No, No, Yes, Yes, No

(iv) Yes, Yes, Yes, No, Yes, No, Yes, Yes

(v) No, Yes, No, No, No, No, No, No

(vi) Yes, Yes, Yes, No, Yes, Yes, No, Yes

(vii) Yes, No, Yes, Yes, No, No, Yes, No

(viii) Yes, No, Yes, Yes, No, No, Yes, No

(ix) No, Yes, No, Yes, No, No, No, No

8. 19503, 19512