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Rithika had Rs 8000. She invested some of it in savings scheme P and the rest ofthe money in savings scheme Q. She invested for 3 years in savings scheme P and for2 years in savings scheme Q. savings scheme P offers SI at a rate of 20% pa whilesavings scheme Q compounded annually at the rate of 30% pa. The interest receivedfrom savings scheme P is 930 more than the interest received from savings scheme Q.If Rs 1500 is debited from the invested amount of savings scheme P then find thedifference between the amount invested by Rithika in savings scheme P & savingsscheme Q.
Consider the following types of modulation: 1. Amplitude modulation 2. Frequency modulation 3. Phase modulation 4. Pulse modulation Which of the above modulation are used for telecasting TV programs?
Consider the following statements regarding modulation : 1. The communication systems, where a weak signal is transmitted by the use of a modulation is essential in carrier signal. 2. When the frequency of the high frequency signal is varied in accordance with the intensity of the low-frequency weak signal, the modulation is said to be frequency modulation. 3. The process of recovering original baseband signal from the modulated signal is called phase modulation. Which of the above statements are correct ? 
A person invested Rs.2500 more in scheme B than that in scheme A. Scheme A offers 24% simple rate of interest and scheme B offers 20% annual rate of compound interest. If Interest from scheme A after 4 years is Rs.1080 more than that from scheme B after 3 years, then what is the ratio of amount invested in scheme A to that in scheme B?
Out of the following, which are the schemes of Social Security?
(i) Provident Fund Scheme
(ii) Health Insurance Scheme
(iii) Job Guarantee Scheme
(iv) Maternity Benefit Scheme
(v) Merit Promotion Scheme
(vi) Compulsory and Voluntary Social Insurance Scheme
(vii) Child Insurance Scheme
Gaussian minimum shift keying is based on frequency shift keying.
The amount of interest received by Aman after two years in investment scheme B was 50% more than that received from investment scheme A. Scheme A offered an interest rate of 10% compounded annually while scheme B offered 15% p.a. simple interest. What percentage more amount was invested by Aman in scheme B in comparison to in scheme A?
Shashi had a certain amount of money. He invested $$\frac{2}{3}$$ of the total money in scheme A for 6 years and rest of the money he invested in scheme B for 2 years. Scheme A offers simple interest at a rate of 12% p.a. and scheme B offers compound interest ( compound annually) at a rate of 10% p.a. If the total interest obtained from both the schemes is Rs. 2750. What was the total amount invested by him in scheme A and scheme B together ? (Approximate value)
If digital data rate of 9600 bps is encoded using 8-level phase shift keying (PSK) method, the modulation rate is
Phase shift keying (psk) method is used to modulate digital signals at 9600 bps using 16 levels. Find the line signaling speed (i.e., modulation rate)