What is the sum of X+XX+XXX+XXXX?

Read also:

• How can couples reverse the buildup of resentment once they notice it?
• Researchers Use Trapped-Ion Quantum Computer to Tackle Tricky Protein Folding Problems - The Quantum Insider
• Why are people outraged over Latina actress, Rachel Zegler, being cast to play Snow White in the live action remake of Disney’s Snow White and the Seven Dwarfs?
• What do you think is the #1 cause of why relationships nowadays don't seem to last long?
• I caught my husband of 20 years looking at inappropriate pics of women on TikTok or Instagram. I'm not sure., but when I told him he got mad and made excuses of why they popped up. I then told him how I've snuck on his phone and saw what he's been looking at . We had a horrible big fight. I asked him why did he even marry me when I see the type he likes . Nothing like me, I'm petite, blonde and blue eyes. These women are dark haired dark eyed and have curvy bodies, large breasts, etc. I just don't feel the same about him after this. I can't get over this
• What was your biggest culture shock going to Europe?
• What is the most popular song that includes the word "you"? Are there any other songs that use "you" multiple times?
• How come Taiwan is LGBT friendly, yet Japan and South Korea are not?
• If Russia needs the resources to fund the war in Ukraine, why doesn’t it throw open its doors to visa free western tourism? Enough people would be interested, & it would start to get some hard currency as €, CHF, £, SEK, $, JPY in the tills at shops.
• Why does my best friend call me ugly and act like she’s joking, but today she looked at me and said “I wouldn’t lie to you”? What should I say back to her?
• Low-cost green hydrogen production possible with Korean scientists’ new breakthrough - Interesting Engineering