৪৯৯৩১
Identify the oldest phone hacking technique used by hackers to make free calls.
উত্তর
Phreaking
৪৯৯৩২
Which one of the following techniques, is used to hide information inside a picture?
উত্তর
Steganography
৪৯৯৩৩
If two jeans and three shirts cost Tk. 4000 and three jeans and two shirts costs Tk. 3500, then how much does a jeans cost?
উত্তর
Tk. 500
৪৯৯৩৫
One-third of Ratan's investment in National Savings Certificate is equal to one-half of his investment in FDR. If he has Tk. 1,50,000 as total investment, how much he invested in savings certificate?
উত্তর
Tk. 90,000
৪৯৯৩৬
A man bought some eggs of which 10% are rotten. He gives 80% of the remainder to his neighbors. Now he is left out with 36 eggs. How many eggs he bought?
উত্তর
200
৪৯৯৩৭
Simple interest on a certain sum at the rate of 4.5% p.a. for 4 years and 6 years differs by BDT 216. The sum is-
উত্তর
BDT 2,400
৪৯৯৩৯
A worker was hired for 7 days. Each day, he was paid Tk. 10 more than what he was paid for the previous day of work. The total amount he was paid in the first 4 days of work equaled the total amount he was paid in the last 3 days. What was his starting pa
উত্তর
Tk.90
৪৯৯৪০
The average daily wage of 10 workers is Tk.400. If the lowest wage is Tk.300, then what is the possible maximum wage?
উত্তর
1300