try solving these!!

[sairamjanakiram]

1.There were 2 systems A n B.14 degrees in A is equivalent to 36 in system B.and 133 in A is equivalent to 87 in B.now what is the temperature where they both r equal?

2.If a clock takes 3 sec to strike at 3 o clock (striking time neglected), then wht would be d time taken by d clock to ring when it is 7 o clock.

3. a) 10,7,8,_,12,9

b) 46656, 3125, 256,27,_,1

4.My husband's watch gains 2 minutes every watch
and my watch loses 1 minute for each hour. One day, we were late to marriage because the difference between the time in the two watches was 1 hr and we looked at the slow watch. When did we last set our watches to the same time?

ans with solu pls!!!

[jsangeetha]

4.My husband's watch gains 2 minutes every watch
and my watch loses 1 minute for each hour. One day, we were late to marriage because the difference between the time in the two watches was 1 hr and we looked at the slow watch. When did we last set our watches to the same time?

Everyone hour the watches gains 3 mins difference. So at the end of 20 hrs it would be 60 mins diff. Hence the answer is 20 hrs before they set their timings.

[jsangeetha]

2.If a clock takes 3 sec to strike at 3 o clock (striking time neglected), then wht would be d time taken by d clock to ring when it is 7 o clock.

At 3 o clock it strikes thrice.

So for 2 intervals it takes 3 secs(striking time neglected). So for one interval it would be 3/2 secs = 1.5 secs.

When it is 7 o clock it would strike 7 times and the interval is 6. So it would take 1.5 sec * 6 = 9.0 sec

[sairamjanakiram]

hi sangeetha,

thanx for ur answers n explanation!!keep up de good work!!

[WISDOM]

Originally Posted by sairamjanakiram

"FAILING TO PREPARE IS PREPARING TO FAIL"

[WISDOM]

sangeetha madam is right in 2nd and 4 th

1. A moves from 14 to 133 and B moves from 36 to 87

133-14 = 119

87-36 = 51

If B rises by 51, then A rises by 119

If B rises by 1, then A rises by 119/51 = 7/3 (17*7 = 119)

let t be the temp when both have same temp

b rises from 36 to t (assumption 36<t<87)

this meansA rises by(t-36)* 7/3 which is equal to (t-14)

=> t = 52.5

right? [img]smileys/smiley3.gif[/img]

3) (b) 6^6, 5^5, 4^4, 3^3, 2^2, 1^1

ans is 4

(a) ans is 9 and let's cram it!!! maine bhi rata hai. no other option. cudn't understand how to get it. lemme try again!!!!![img]smileys/smiley12.gif[/img]

10,7,8,9,12,9. only Google can put this sequence!

Edited by: WISDOM