What is the value of (?) in the following equation?
(41.99² − 18.04²) − ? = 13.11² − 138.99
✅Using identity: a² − b² = (a − b)(a + b) (Approximation) 41.99 ≈ 42 18.04 ≈ 18 13.11 ≈ 13 138.99 ≈ 139

A 60 litre mixture of milk and water contains 10% water. How much water must be added so that water becomes 25% of the new mixture?

✅ water = 60×10÷100= 6L, Milk = 60 − 6 = 54 litres, Let x litres water be added. New water = 6 + x÷54=25÷75

A 90 litre mixture of milk and water contains 20% water. How much water must be added so that water becomes 40% of the new mixture?

Ayesha borrows ₹5000 at 8% simple interest per annum for 3 years and lends the same amount at 8% compound interest (compounded yearly) for 3 years. What is her gain?

✅Simple Interest & Compound Interest Difference SI=P.T.R÷100, CI= P[(1+R/100)^T -1]

Ayesha borrows ₹2000 at 5% simple interest per annum for 3 years and lends the same at 5% compound interest (compounded yearly) for 3 years. What is her gain?

Ayesha borrows ₹4000 at 5% simple interest per annum for 2 years and lends the same at 5% compound interest (compounded yearly) for 2 years. What is her gain?

✅ Difference CI-SI

Ayesha borrows ₹1000 at 10% simple interest per annum for 3 years and lends the same at 10% compound interest (compounded yearly) for 3 years.
What is her gain?

ଭାଷା ପ୍ରକାଶିତ ହେବାପାଇଁ ଗ୍ରହଣ କରୁଥିବା ଦୁଇଟି ରୂପ କ’ଣ କ’ଣ?

‘କ’ ବର୍ଗର ଅନ୍ୟନାମ କ’ଣ?

ଯେଉଁ ଶବ୍ଦରୁ କୌଣସି ଗୋଟିଏ ଧ୍ୱନି ବା ବର୍ଣ୍ଣ କାଟି ଦେଲେ ତାହା ପୂର୍ବପରି ଅର୍ଥ ପ୍ରକାଶ କରିବାରେ ଅକ୍ଷମ ହୁଏ, ତାହାକୁ କ’ଣ କୁହାଯାଏ?

ନିମ୍ନଲିଖିତ ମଧ୍ୟରୁ କେଉଁ ପଦର ଲିଙ୍ଗ, ବଚନ, ପୁରୁଷ, କାଳ କିମ୍ବା ବିଭକ୍ତି ଭେଦରେ କୌଣସି ପରିବର୍ତ୍ତନ ହୁଏ ନାହିଁ?

Who is known as the father of the computer?

Who is known as the father of computers in India?

ପ୍ରଶ୍ନ:
14 ଫେବୃୟାରୀ କେଉଁ ଦିବସ ଭାବେ ପାଳନ କରିବା ଉଚିତ ଏବଂ ପ୍ରେମ କେମିତି ଅଟେ?

A camp has food for 200 persons for 40 days. After 10 days, 50 persons leave the camp. For how many more days will the remaining food last?

Mahendragiri Hills are located in which district of Odisha?

'ବିଦ୍ୟାଳୟ' ର ସଠିକ୍ ସନ୍ଧି ବିଚ୍ଛେଦ କଣ?

'ସେ ଆଖିରେ ଦେଖୁଛି' - ଏଠାରେ 'ଆଖିରେ' କେଉଁ କାରକ?

କପାଳ ଫାଟିବା' ରୂଢ଼ିର ଅର୍ଥ କ'ଣ?

'କପାଳ ଫିଟିବା' ରୂଢ଼ିର ସଠିକ୍ ଅର୍ଥ କ'ଣ?