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Read the Question carefully and choose the correct option.
Find the value of the expression :
[(0.12x 0.12x0.12)+(0.012x0.012x0.012)]/
[(0.48x0.48x0.48)+(0.048x0.048x%0.048)]

1. 1/16
2. 1/4
3. 4
4. 1/64

व्यंजक का मान ज्ञात कीजिए :
[(0.12x 0.12x0.12)+(0.012x0.012x0.012)]/
[(0.48x0.48x0.48)+(0.048x0.048x%0.048)]

1. 1/16
2. 1/4
3. 4
4. 1/64
This Question came in
UGC-NET-History-29-August-2024-Shift-1-Q15
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Detailed Explanation & Answer
[(0.12^3) + (0.012^3)] / [(0.48^3) + (0.048^3)],

we can use a mathematical trick by factoring out powers of 10.

First, rewrite the numbers:

0.12 = 12 x 10^-2
0.012 = 12 x 10^-3
0.48 = 48 x 10^-2
0.048 = 48 x 10^-3
Now substitute these into the expression:

0.12^3 = (12 x 10^-2)^3 = 12^3 x 10^-6,
0.012^3 = (12 x 10^-3)^3 = 12^3 x 10^-9,
0.48^3 = (48 x 10^-2)^3 = 48^3 x 10^-6,
0.048^3 = (48 x 10^-3)^3 = 48^3 x 10^-9.

The expression can now be rewritten as:

[12^3 x 10^-6 + 12^3 x 10^-9] / [48^3 x 10^-6 + 48^3 x 10^-9].

Factor out 12^3 in the numerator and 48^3 in the denominator:

[12^3 (10^-6 + 10^-9)] / [48^3 (10^-6 + 10^-9)].

The (10^-6 + 10^-9) terms cancel out:

12^3 / 48^3.

Now simplify 12^3 / 48^3:

12 / 48 = 1 / 4, so

(1 / 4)^3 = 1 / 64.
[(0.12^3) + (0.012^3)] / [(0.48^3) + (0.048^3)],

हम 10 की घातों का गुणनखंड करके एक गणितीय युक्ति का उपयोग कर सकते हैं।

सबसे पहले, संख्याओं को फिर से लिखें:

0.12 = 12 x 10^-2
0.012 = 12 x 10^-3
0.48 = 48 x 10^-2
0.048 = 48 x 10^-3
अब इन्हें अभिव्यक्ति में प्रतिस्थापित करें:

0.12^3 = (12 x 10^-2)^3 = 12^3 x 10^-6,
0.012^3 = (12 x 10^-3)^3 = 12^3 x 10^-9,
0.48^3 = (48 x 10^-2)^3 = 48^3 x 10^-6,
0.048^3 = (48 x 10^-3)^3 = 48^3 x 10^-9।

अभिव्यक्ति को अब इस प्रकार फिर से लिखा जा सकता है:

[12^3 x 10^-6 + 12^3 x 10^-9] / [48^3 x 10^-6 + 48^3 x 10^-9]।

अंश में 12^3 और हर में 48^3 का गुणनखंड निकालें:

[12^3 (10^-6 + 10^-9)] / [48^3 (10^-6 + 10^-9)]।

(10^-6 + 10^-9) पद रद्द हो जाते हैं:

12^3/48^3.

अब 12^3/48^3 को सरल बनाएं:

12 / 48 = 1 / 4, तो

(1/4)^3 = 1/64.
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